Terminal device and method

Abstract

An embodiment of the present disclosure provides a solution for STxMP, in which a terminal device receives, from a network device, configuration information for uplink transmissions associated with first and second SRS resource sets, the configuration information indicating first and second parameter sets to be used for the uplink transmissions, a first instruction indicating a simultaneous transmission scheme for the uplink transmissions, and mapping information, determines, based at least in part on the first instruction and the mapping information, the first and second parameter sets associated with the first and second SRS resource sets, respectively, and performs the uplink transmissions based on the first and second parameter sets.

Description

[Technical Field]

[0001] FIELD Exemplary embodiments of the present disclosure relate generally to the field of communications technologies, and more particularly to an apparatus and method for simultaneous transmission over multi-panels (STxMP). [Background technology]

[0002] Traditionally, physical uplink shared channels (PUSCHs) are assigned priorities, and terminal devices (e.g., user equipment, UE) do not expect PUSCH transmissions to overlap in time with other PUSCH transmission opportunities in a given serving cell. In other words, legacy terminal devices did not support simultaneous PUSCH transmissions. It is now agreed that STxMP will be supported for PUSCHs. Therefore, there is a need to enhance collision handling between at least partially overlapping PUSCHs. Summary of the Invention [Problem to be solved by the invention]

[0003] Generally, embodiments of the present disclosure provide a method, apparatus, and computer storage medium for STxMP. [Means for solving the problem]

[0004] In a first aspect, a terminal device including a processor is provided, and the processor is configured to receive, from a network device, configuration information for uplink transmission associated with a first sounding reference signal (SRS) resource set and a second SRS resource set, the configuration information indicating a first parameter set and a second parameter set to be used for the uplink transmission, a first instruction indicating a simultaneous transmission scheme for the uplink transmission, and mapping information, the mapping information indicating at least one of a correspondence relationship between the first and second parameter sets and the first and second SRS resource sets or a combination of the number of layers associated with the first and second parameter sets, determine the first and second parameter sets associated with the first and second SRS resource sets, respectively, based at least in part on the first instruction and the mapping information, and perform uplink transmission with the network device based on the first and second parameter sets.

[0005] In a second aspect, a terminal device is provided that includes a processor, and the processor is configured to receive, from a network device, configuration information indicating a first configuration for a first uplink transmission that indicates a first parameter set and a second configuration for a second uplink transmission that at least partially overlaps with the first uplink transmission during a period, the second configuration indicating the second parameter set being determined at least in part based on the first parameter set, and to perform the first and second uplink transmissions simultaneously during the period based on the first and second parameter sets.

[0006] In a third aspect, a terminal device is provided that includes a processor, the processor being configured to: receive, from a network device, first configuration information for a first uplink transmission, the first uplink transmission associated with a first Timing Advance Group (TAG); receive, from the network device, second configuration information for a second uplink transmission, the second uplink transmission associated with a second TAG, the second uplink transmission non-overlapping with the first uplink transmission in a first period, the first period being associated with a second period of the first uplink transmission and a third period associated with a first difference between the first TAG and the second TAG; and perform the first and second uplink transmissions with the network device, respectively, based at least in part on the first and second configuration information.

[0007] In a fourth aspect, a network device is provided that includes a processor, and the processor is configured to transmit, to a terminal device, configuration information for uplink transmission associated with a first sounding reference signal (SRS) resource set and a second SRS resource set, the configuration information indicating a first parameter set and a second parameter set to be used for the uplink transmission, a first instruction indicating a simultaneous transmission scheme for the uplink transmission, and mapping information, the mapping information indicating at least one of a correspondence between the first and second parameter sets and the first and second SRS resource sets, or a combination of the number of layers associated with the first and second parameter sets, and receive the uplink transmission from the terminal device.

[0008] In a fifth aspect, a network device is provided that includes a processor, and the processor is configured to transmit to a terminal device configuration information indicating a first configuration of a first uplink transmission that indicates a first parameter set during a time period and a second configuration of a second uplink transmission that at least partially overlaps with the first uplink transmission during the time period, the second configuration indicating the second parameter set that is determined at least in part based on the first parameter set, and to receive the first and second uplink transmissions simultaneously.

[0009] In a sixth aspect, a network device is provided that includes a processor, the processor being configured to: transmit first configuration information for a first uplink transmission to a terminal device, the first uplink transmission being associated with a first timing advance group (TAG); transmit second configuration information for a second uplink transmission to the terminal device, the second uplink transmission being associated with a second TAG, the second uplink transmission not overlapping with the first uplink transmission in a first period, the first period being associated with a second period of the first uplink transmission and a third period associated with a first difference between the first TAG and the second TAG; and receive the first and second uplink transmissions from the terminal device, respectively, based at least in part on the first and second configuration information.

[0010] In a seventh aspect, a communication method executed by a terminal device is provided, the method including: receiving, from a network device, configuration information for uplink transmission associated with a first sounding reference signal (SRS) resource set and a second SRS resource set, the configuration information indicating a first parameter set and a second parameter set to be used for the uplink transmission, a first instruction indicating a simultaneous transmission scheme for the uplink transmission, and mapping information, the mapping information indicating at least one of a correspondence relationship between the first and second parameter sets and the first and second SRS resource sets or a combination of the number of layers associated with the first and second parameter sets; determining, based at least in part on the first instruction and the mapping information, the first and second parameter sets associated with the first and second SRS resource sets, respectively; and performing uplink transmission with the network device based on the first and second parameter sets.

[0011] In an eighth aspect, there is provided a communication method performed by a terminal device, the method including: receiving, from a network device, configuration information indicating a first configuration for a first uplink transmission indicating a first parameter set and a second configuration for a second uplink transmission that at least partially overlaps with the first uplink transmission during a time period, the second configuration indicating the second parameter set being determined at least in part based on the first parameter set; and simultaneously performing, during the time period, the first and second uplink transmissions based on the first and second parameter sets.

[0012] In a ninth aspect, a communication method performed by a terminal device is provided, the method including: receiving first configuration information for a first uplink transmission from a network device, the first uplink transmission associated with a first Timing Advance Group (TAG); receiving second configuration information for a second uplink transmission from the network device, the second uplink transmission associated with a second TAG, the second uplink transmission non-overlapping with the first uplink transmission in a first time period, the first time period being associated with a second time period for the first uplink transmission and a third time period associated with a first difference between the first TAG and the second TAG; and performing the first and second uplink transmissions with the network device, respectively, based at least in part on the first and second configuration information.

[0013] In a tenth aspect, there is provided a communication method executed by a network device, the method including: transmitting, to a terminal device, configuration information for uplink transmission associated with a first sounding reference signal (SRS) resource set and a second SRS resource set, the configuration information indicating a first parameter set and a second parameter set to be used for the uplink transmission, a first indication indicating a simultaneous transmission scheme for the uplink transmission, and mapping information, the mapping information indicating at least one of a correspondence relationship between the first and second parameter sets and the first and second SRS resource sets or a combination of the number of layers associated with the first and second parameter sets; and receiving the uplink transmission from the terminal device.

[0014] In an eleventh aspect, there is provided a communication method performed by a network device, the method including: transmitting, to a terminal device, configuration information indicating a first configuration of a first uplink transmission indicating a first parameter set during a time period and a second configuration of a second uplink transmission that at least partially overlaps with the first uplink transmission during a time period, the second configuration indicating the second parameter set determined at least in part based on the first parameter set; and simultaneously receiving the first and second uplink transmissions.

[0015] In a twelfth aspect, provided is a communication method performed by a network device, the method including: transmitting, to a terminal device, first configuration information for a first uplink transmission, the first uplink transmission associated with a first Timing Advance Group (TAG); transmitting, to the terminal device, second configuration information for a second uplink transmission, the second uplink transmission associated with a second TAG, the second uplink transmission non-overlapping with the first uplink transmission in a first time period, the first time period associated with a second time period for the first uplink transmission and a third time period associated with a first difference between the first TAG and the second TAG; and receiving, respectively, the first and second uplink transmissions from the terminal device based at least in part on the first and second configuration information.

[0016] In a thirteenth 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 the first, second, third, fourth, fifth or sixth aspect.

[0017] Other features of the present disclosure will become readily apparent from the following description. [Brief explanation of the drawings]

[0018] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of several exemplary embodiments of the present disclosure in the accompanying drawings.

[0019] [Figure 1] 1 illustrates an exemplary communication environment in which exemplary embodiments of the present disclosure may be implemented.

[0020] [Figure 2A] 1 shows a schematic diagram of a space division multiplexing (SDM) scheme according to some embodiments of the present disclosure.

[0021] [Figure 2B] 1 illustrates a schematic diagram of a single frequency network (SFN) scheme according to some embodiments of the present disclosure.

[0022] [Figure 3] 1 illustrates a configuration and indication signaling flow for STxMP according to some embodiments of the present disclosure.

[0023] [Figure 4A] 10 illustrates an example lookup table for a second sounding reference signal resource indicator (SRI), according to some embodiments of the present disclosure.

[0024] [Figure 4B] 1 illustrates an example lookup table for a second transmit precoding matrix index (TPMI) according to some embodiments of the present disclosure.

[0025] [Figure 5] 1 illustrates a signaling flow for STxMP collision handling according to some embodiments of the present disclosure.

[0026] [Figure 6] 1 illustrates an exemplary scenario in which a first uplink transmission is associated with a first transmission reception point (TRP) and a second uplink transmission is associated with a second TRP.

[0027] [Figure 7] 1 illustrates an exemplary scenario in which a first uplink transmission is associated with a first TRP and a second uplink transmission is associated with multi-TRP operation.

[0028] [Figure 8] 1 illustrates an example scenario in which a first uplink transmission is associated with multi-TRP operation and a second uplink transmission is associated with multi-TRP operation.

[0029] [Figure 9] 1 illustrates a signaling flow of processing for different timing advance (TA) cases according to some embodiments of the present disclosure.

[0030] [Figure 10A] 1 illustrates a schematic diagram of timing of uplink transmissions without considering TA difference according to some embodiments of the present disclosure.

[0031] [Figure 10B] 1 illustrates a schematic diagram of timing of uplink transmission taking into account TA difference according to some embodiments of the present disclosure.

[0032] [Figure 11] 1 illustrates a flowchart of a method implemented in a terminal device according to some exemplary embodiments of the present disclosure.

[0033] [Figure 12] 1 illustrates a flowchart of a method implemented in a terminal device according to some exemplary embodiments of the present disclosure.

[0034] [Figure 13] 1 illustrates a flowchart of a method implemented in a terminal device according to some exemplary embodiments of the present disclosure.

[0035] [Figure 14] 1 illustrates a flowchart of a method implemented in a network device according to some exemplary embodiments of the present disclosure.

[0036] [Figure 15] 1 illustrates a flowchart of a method implemented in a network device according to some exemplary embodiments of the present disclosure.

[0037] [Figure 16] 1 illustrates a flowchart of a method implemented in a network device according to some exemplary embodiments of the present disclosure.

[0038] [Figure 17] FIG. 1 shows a simplified block diagram of an apparatus suitable for implementing exemplary embodiments of the present disclosure.

[0039] Throughout the drawings, the same or similar reference numbers represent the same or similar elements. DETAILED DESCRIPTION OF THE INVENTION

[0040] The principles of the present disclosure will now be described with reference to some exemplary embodiments. It should be understood that these embodiments are provided for illustrative purposes only, to help those skilled in the art understand and practice the present disclosure, and are not intended to imply any limitations on the scope of the present disclosure. The embodiments described herein may be implemented in various ways other than those described below.

[0041] In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0042] As used herein, the term "terminal device" refers to any device with wireless or wired communication capabilities. Examples of terminal devices include user equipment (UE), personal computers, desktops, mobile phones, mobile phones, smartphones, personal digital assistants (PDAs), portable computers, tablets, wearable devices, Internet of Things (IoT) devices, Ultra-reliable and Low Latency Communications (URLLC) devices, Internet of Everything (IoE) devices, Machine Type Communication (MTC) devices, vehicle-mounted devices for V2X communications (where X stands for pedestrian, vehicle, or infrastructure / network), Integrated Access and Backhaul (IAB) devices, High Altitude Platforms (HAPs) including Unmanned Aircraft Systems (UASs) and spacecraft or aircraft in Non-Terrestrial Networks (NTNs) with satellites, and extended reality (XR) including various types of reality such as Augmented Reality (AR), Mixed Reality (MR), and Virtual Reality (VR). This includes, but is not limited to, image capture devices such as Reality devices, Unmanned Aerial Vehicles (UAVs), which are aircraft without a human pilot and are commonly known as drones, devices on High Speed ​​Trains (HST), digital cameras, sensors, gaming devices, music storage and playback devices, or internet appliances that enable wireless or wired internet access or browsing.A "terminal device" may also have "multicast / broadcast" features to support public safety, mission-critical, V2X applications, transparent IPv4 / IPv6 multicast distribution, IPTV, smart TV, wireless services, over-the-air software distribution, group communication, and IoT applications. It may also incorporate one or more Subscriber Identity Modules (SIMs), known as multi-SIMs. The term "terminal device" can be used interchangeably with UE, mobile station, subscriber station, mobile terminal, user terminal, or wireless device.

[0043] The term "network device" refers to a device that can provide or host a cell or coverage area over which terminal devices 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 next generation Node B (gNB), a Transmission Reception Point (TRP), a Remote Radio Unit (RRU), a Radio Head (RH), a Remote Radio Head (RRH), an IAB node, a low power node such as a femto node, a pico node, a Reconfigurable Intelligent Surface (RIS), etc.

[0044] A terminal device or network device may have artificial intelligence (AI) or machine learning capabilities, typically including models trained from a large amount of collected data for a particular function, which can be used to predict some information.

[0045] The terminal device or network device may operate in, for example, FR1 (e.g., 450 MHz to 6000 MHz), FR2 (e.g., 24.25 GHz to 52.6 GHz), frequency bands above 100 GHz, terahertz (THz), etc. Furthermore, it can also operate in licensed / unlicensed / shared frequency bands. In MR-DC (Multi-Radio Dual Connectivity) application scenarios, the terminal device may have more than one connection with the network device. The terminal device or network device can operate in full duplex, flexible duplex, and cross-division duplex modes.

[0046] Embodiments of the present disclosure may be implemented in a test device, such as a signal generator, a signal analyzer, a spectrum analyzer, a network analyzer, a test terminal device, a test network device, or a channel emulator. In some embodiments, the terminal device may be connected to a first network device and a second network device. One of the first network device and the second network device may be a master node, and the other may be a secondary node. The first network device and the second network device may use different radio access technologies (RATs). In some embodiments, the first network device may be a first RAT device, and the second network device may be a second RAT device. In some embodiments, the first RAT device is an eNB, and the second RAT device is a gNB. Information related to the different RATs may be transmitted to the terminal device from at least one of the first network device or the second network device. In some embodiments, the first information may be transmitted from the first network device to the terminal device, and the second information may be transmitted from the second network device to the terminal device directly or via the first network device. In some embodiments, information regarding the configuration for the terminal device configured by the second network device may be transmitted from the second network device via the first network device, and information regarding the reconfiguration for the terminal device configured by the second network device may be transmitted to the terminal device directly from the second network device or via the first network device.

[0047] As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The term "comprises" and variations thereof are read as open terms meaning "including, but not limited to." The term "based on" is read as "based at least in part on." The terms "one embodiment" and "embodiment" are read as "at least one embodiment." The term "another embodiment" is read as "at least one other embodiment." Terms such as "first," "second," etc. may refer to different or the same object. Other definitions, both explicit and implicit, may be included below.

[0048] In some instances, values, procedures, or devices are referred to as "best," "lowest," "highest," "minimum," "maximum," etc. It is understood that such descriptions are intended to indicate that a selection can be made from among many functional options available, and that such a selection is not necessarily better, smaller, higher, or otherwise preferred than other options.

[0049] As used herein, the terms "resource," "transmission resource," "uplink resource," or "downlink resource" may refer to any resource for performing communication, such as a resource in the time domain, a resource in the frequency domain, a resource in the spatial domain, a resource in the code domain, or other resource that enables communication. Hereinafter, unless otherwise specified, resources in both the frequency domain and the time domain are used as examples of transmission resources to describe some exemplary embodiments of the present disclosure. It should be noted that the exemplary embodiments of the present disclosure are equally applicable to other resources in other domains.

[0050] As used herein, the term "TRP" may refer to an antenna port or antenna array (having one or more antenna elements) available to a network device located in a particular geographic location. For example, a network device may be coupled to multiple TRPs in different geographic locations to achieve better coverage. Alternatively or additionally, multiple TRPs may be incorporated into a network device; in other words, a network device may include multiple TRPs. The term "TRP" may also refer to a cell, such as a macrocell, small cell, picocell, femtocell, remote radio head, or relay node. It should be understood that the term "TRP" may refer to a logical concept that may be physically implemented in various ways.

[0051] There may not be an explicit TRP identifier (ID). If multi-downlink control information (M-DCI) is assumed, the TRP ID may be implicitly identified via the control resource set (CORESET) pool index (CORESETPoolIndex). If single-DCI (S-DCI) is assumed, the TRP ID may be implicitly identified via at least the sounding reference signal (SRS) resource set ID for uplink (UL) transmission. Therefore, the term "TRP" can be used interchangeably with "CORESETPoolIndex" and SRS resource set.

[0052] In the case of M-DCI, the terminal device is configured by a higher layer parameter PDCCH-Config, which includes two different CORESETPoolIndex values ​​in a ControlResourceSet for an active BWP (bandwidth part) of the serving cell.

[0053] In the case of S-DCI, there is only one value of CORESETPoolIndex in the ControlResourceSet.

[0054] The UL-DCI is used for UL scheduling, e.g. DCI format 0_1 ​​or 0_2. If the UL-DCI is addressed to a cell Radio Network Temporary Identity (C-RNTI), the UL-DCI is used for a dynamic grant (DG). If the UL-DCI is addressed to a configured scheduling-RNTI (CS-RNTI), the UL-DCI is used for a type 2 configured grant (CG).

[0055] BM-DCI is used for downlink (DL) transmission configuration indicator (TCI) updates, e.g., DCI format 1_1 or 1_2, regardless of whether there is a DL allocation.

[0056] In an exemplary embodiment of the present disclosure, two SRS resource sets are configured to support UL multi-TRP (MTRP) and STxMP. The two SRS resource sets are configured for codebook (CB) and non-codebook (NCB), respectively, e.g., by setting use to "codebook" or "nonCodebook." These two SRS resource sets may be configured in the information element (IE) srs-ResourceSetToAddModList and / or the IE srs-ResourceSetToAddModListDCI-0-2. If both of the above two IEs are configured, the SRS resource set(s) configured in the IE srs-ResourceSetToAddModList may be used as the two SRS resource sets. In some embodiments, unless otherwise specified, the first SRS resource set may be the SRS resource set with the smaller resource set ID.

[0057] In the case of 2-TA (2-Timing Advance) and / or 2-TAG (2-Timing Advance Group), two TAG IDs can be configured for one cell, and each TAG ID may be associated with a TA value.

[0058] As used herein, the terms "UE expects," "UE does not expect," "terminal device expects," and "terminal device does not expect" may refer to restrictions on network device configuration (also referred to as NW configuration). The terms "UE does not expect" and "terminal device does not expect" may refer to terminal implementation (also referred to as UE implementation). In some embodiments, the terms "UE does not expect" and "UE does not expect" may be used interchangeably.

[0059] As used in this specification, the terms "transmission capability information," "UE capability information," "capability-related information," "capability value set," "panel information," and "panel-related information" may be used interchangeably.

[0060] As used in this specification, the terms "precoder," "precoding," "precoding matrix," "beam," "spatial relationship information," "spatial relationship info," "precoding information," "precoding information and number of layers," "precoding matrix indicator (PMI)," "precoding matrix indicator," "transmit precoding matrix indication," "precoding matrix indication," "transmission configuration indication state (TCI state)," "UL TCI state," "joint TCI state," "transmission configuration indicator," "quasi-co-location (QCL)," "quasi-co-location," "QCL parameters," "QCL assumptions," "QCL relationship," and "spatial relationship" can be used interchangeably.

[0061] As used herein, the terms "TRP," "TCI state," "TCI," "CORESET," "CORESET pool," "UL TCI state," and "Joint TCI state" may be used interchangeably.

[0062] As used herein, "multiple TRPs," "multiple TCI states," "multiple CORESETs," "multiple control resource set pools," "multi-TRPs," "multi-TCI states," "multi-TCIs," "multi-CORESETs," "multiple control resource set pools," "MTRPs," and "M-TCIs" and "M-TRPs" may be used interchangeably.

[0063] The terms "resource(s)," "resource(s) in a resource set," and "resource set" may be used interchangeably.

[0064] The terms "group," "subset," and "set" may be used interchangeably.

[0065] The term "BWP ID / index" can be used interchangeably with "BWP / Component Carrier (CC) ID / index", "CC identifier / index", "cell identifier / index", "physical cell identifier / index", "physical cell identifier (PCI)", "physCellId", and "serving cell identifier / index".

[0066] The term "TCI state" can be used interchangeably with "TCI state ID," "RS ID," "QCL information," and "beam ID."

[0067] The term "codepoint" can be used interchangeably with the terms "code value," "bitmap," "bit value," "field value," and "payload."

[0068] Furthermore, a panel as discussed herein refers to one or more antenna elements arranged in a specific area of ​​a terminal device. A panel as discussed 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," "set of antenna port(s)," "antenna element(s)," and "antenna array(s)" (and their equivalents) may be used interchangeably.

[0069] Additionally, panel information discussed herein may refer to a UE panel index / identifier (ID), a downlink panel ID, an uplink panel ID, a panel type indication, a panel status indication, a capability value set index, an RS resource ID, an RS resource set ID, an antenna port ID, an antenna port group ID, a beam ID, and a beam group ID.

[0070] The principles and implementations of the present disclosure will be described in detail below with reference to the drawings. Example Environment

[0071] 1 illustrates a schematic diagram of an exemplary communication environment 100 in which exemplary embodiments of the present disclosure may be implemented. In the communication environment 100, multiple communication devices, including terminal devices 110 and network devices 120, are capable of communicating with each other.

[0072] 1, the terminal device 110 may be a UE, and the network device 120 may be a base station that serves the UE. The serving area of ​​the network device 120 may be referred to as a cell.

[0073] It should be understood that the number of devices and their connections shown in FIG. 1 are for illustrative purposes only, without implying any limitations. Communication environment 100 may include any suitable number of devices configured to implement example embodiments of the present disclosure. For ease of explanation, some example embodiments are described below in which terminal device 110 operates as a UE and network device 120 operates as a base station. However, in some example embodiments, operations described with respect to a terminal device may be implemented in a network device or other device, and vice versa.

[0074] In some exemplary embodiments, the link from network device 120 to terminal device 110 is referred to as the DL, and the link from terminal device 110 to network device 120 is referred to as the UL. In the DL, network device 120 is the transmitting (TX) device (or transmitter) and terminal device 110 is the receiving (RX) device (or receiver). In the UL, terminal device 110 is the TX device (or transmitter) and network device 120 is the RX device (or receiver).

[0075] Communications in communication environment 100 may conform to any suitable standard, including, but not limited to, Global System for Mobile Communications (GSM), Long Term Evolution (LTE), LTE-Evolution, LTE-Advanced (LTE-A), New Radio (NR), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), GSM EDGE Radio Access Network (GERAN), Machine Type Communication (MTC), etc. Embodiments of the present disclosure may be performed in accordance with any currently known or future-developed generation of communication protocols. Examples of communication protocols include, but are not limited to, first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, fifth generation (5G) communication protocols, 5.5G, 5G-Advanced networks, or sixth generation (6G) networks.

[0076] In communication environment 100, terminal device 110 is configured with more than one panel. As shown in FIG. 1 , terminal device 110 is configured with panels 131 and 132. Hereinafter, panels 131 and 132 may be referred to as first panel 131 and second panel 132, respectively. In some embodiments, first panel 131 and second panel 132 may correspond to different sets of antenna port(s) / antenna element(s) / antenna array(s). For example, first panel 131 may correspond to a first set of antenna ports, and second panel 132 may correspond to a second set of antenna ports.

[0077] STxMP is supported in the communication environment 100. Specifically, the terminal device 110 may perform uplink transmissions via both the panels 131 and 132 simultaneously.

[0078] The communication environment 100 also supports MTRP. As shown, the network device 120 is coupled to or equipped with two TRPs, including a first TRP 141 and a second TRP 142. Hereinafter, the TRP 141 may be referred to as the first TRP 141, and the TRP 142 may be referred to as the second TRP 142.

[0079] In some embodiments, the first TRP 141 and the second TRP 142 may be associated with different SRS resource sets, e.g., the first TRP 141 is associated with a first SRS resource set and the second TRP 142 is associated with a second SRS resource set.

[0080] In the case of a multi-TRP, the terminal device 110 may communicate with the network device 120 via both the first TRP 141 and the second TRP 142. As an example shown in Figure 1, the terminal device 110 may communicate with the first TRP 141 via the first panel 131 and simultaneously communicate with the second TRP 142 via the second panel 132.

[0081] The communications environment 100 supports STxMP for UL transmissions (e.g., PUSCH transmissions). This disclosure describes exemplary embodiments with respect to PUSCH transmissions, although it should be noted that the principles are applicable to other types of UL transmissions.

[0082] The STxMP scheme may include SDM STxMP and SFN STxMP. FIG. 2A shows a schematic diagram of the SDM scheme. As shown, different layers are simultaneously transmitted by different panels of the terminal device 110. For example, layers with indexes 0, ..., v1-1 may be transmitted by the first panel 131, and layers with indexes v1, ..., v-1 may be transmitted by the second panel 132. A precoding matrix is ​​used for each panel of the terminal device 110. For example, W1 is used for the first panel 131, and W2 is used for the second panel 132. Antenna ports with indexes p0, ..., p1-1 are associated with the first panel 131, and antenna ports with indexes p1, ..., p-1 are associated with the second panel 132. A different beamforming is used for each panel of the terminal device 110. For example, beam 1 is formed by the first panel 131, and beam 2 is formed by the second panel 132. Finally, different panels, ports, beams, and / or layers can be treated as different TRPs. TRP 141 and TRP 142 jointly process the received PUSCH. Note that this scheme can be used not only for transmitting one codeword (CW), i.e., one transport block (TB), but also for transmitting two CWs (each CW can be mapped to 1, 2, 3, or 4 layer(s)) by transmitting, for example, 1 TB per panel / TRP.

[0083] FIG. 2A is a schematic diagram of the SFN scheme. As shown, the same PUSCH (the same TB in this example) is simultaneously transmitted to multiple TRPs via different panels of the terminal device 110. The same number of layers is assumed for each panel. For example, layers with indexes 0, ..., v-1 are transmitted by the first panel 131 and the second panel 132. A precoding matrix is ​​used for each panel of the terminal device 110. For example, W1 is used for the first panel 131, and W2 is used for the second panel 132. Beamforming is used for each panel of the terminal device 110. For example, beam 1 is formed by the first panel 131, and beam 2 is formed by the second panel 132. The TRPs 141 and 142 process the received PUSCHs separately or jointly.

[0084] Antenna ports with indexes p0, ..., p-1 are associated with the first panel 131 and the second panel 132. Furthermore, a first antenna port set is associated with the first panel 131, and a second antenna port set is associated with the second panel 132. In some embodiments, the first panel 131 and the second panel 132 are associated with the same number of antenna ports, i.e., the number of first ports in the first antenna port set is the same as the number of second ports in the second antenna port set. By way of example, antenna ports with indexes p0-0, ..., p0-m are associated with the first panel 131, and antenna ports with indexes p1-0, ..., p1-m are associated with the second panel 132.

[0085] Alternatively, in some embodiments, the first panel 131 and the second panel 132 are associated with different numbers of antenna ports, i.e., the first number of ports in the first antenna port set is different from the second number of ports in the second antenna port set. For example, antenna ports with indexes p0-0, ..., p0-m are associated with the first panel 131 and antenna ports with indexes p1-0, ..., p1-n are associated with the second panel 132, where the values ​​of m and n are different.

[0086] The PUSCH transmission(s) may be dynamically scheduled by an UL grant in the DCI, also referred to as DG in this disclosure. In the DG, relevant fields for UL Multiple-Input Multiple-Output (MIMO) scheduling in DCI format 0_1 / 0_2 include, but are not limited to, a transmit power control (TPC) command for the scheduled PUSCH, a second TPC command for the scheduled PUSCH, an open-loop power control parameter set indication, an SRS resource set indicator, an SRS resource indicator and a second SRS resource indicator, precoding information and layer number and second precoding information, antenna port, phase tracking reference signal (PTRS)-demodulation reference signal (DMRS) association, and a second PTRS-DMRS association.

[0087] The PUSCH transmission(s) may also correspond to a configured grant, also referred to as CG in this disclosure. CG further includes Type 1 CG and Type 2 CG. PUSCH transmissions with Type 1 CG are semi-statically configured to operate based on reception of the higher layer parameters configuredGrantConfig including rrc-ConfiguredUplinkGrant without detection of an UL grant in DCI. PUSCH transmissions with Type 2 CG are semi-persistently scheduled by an UL grant in a valid activation DCI after reception of the higher layer parameters configuredGrantConfig without rrc-ConfiguredUplinkGrant.

[0088] For CG, the relevant IEs in the Radio Resource Control (RRC) for CG-based UL transmission of type 1 (i.e., rrc-ConfiguredUplinkGrant is provided) may include: ·powerControlLoopToUse and powerControlLoopToUse2 ENUMERATED{n0,n1}, ·p0-PUSCH-Alpha and p0-PUSCH-Alpha2, The IE rrc-ConfiguredUplinkGrant contains: pathlossReferenceIndex and pathlossReferenceIndex2, antennaPort INTEGER(0..31), ·precodingAndNumberOfLayers and precodingAndNumberOfLayers2-r17 INTEGER(0..63), srs-ResourceIndicator and srs-ResourceIndicator2 INTEGER(0..15)

[0089] For Type 2 CG, rrc-ConfiguredUplinkGrant is not provided, so DCI addressed to CS-RNTI is required for CG-based UL transmission activation / deactivation. The above fields in DCI format 0_1 / 0_2 can still be used to provide UL MIMO related parameters.

[0090] In the following, transmission with DG may be referred to as DG transmission, and transmission with CG may be referred to as CG transmission. More specifically, transmission with Type 1 CG may be referred to as Type 1 CG transmission, and transmission with Type 2 CG may be referred to as Type 2 CG transmission.

[0091] The UL MTRP scheme may also include PUSCH STxMP, S-DCI-based SDM STxMP, and M-DCI-based STxMP for uplink transmission. In S-DCI-based SDM STxMP, different layers and / or DMRS ports of one PUSCH (or two CWs) are separately precoded and simultaneously transmitted from different panels of the terminal device 110. In S-DCI-based SFN STxMP, all of the same layers and / or DMRS ports of one PUSCH are simultaneously transmitted from two different panels of the terminal device 110. In M-DCI-based STxMP for uplink transmission, two PUSCHs are associated with different TRPs and transmitted from different panels of the terminal device 110. The total number of layers for these two PUSCHs is up to four. Furthermore, STxMP and DG transmission for DG transmission, STxMP and CG transmission for CG transmission, and STxMP and DG transmission for CG transmission are all supported.

[0092] Conventionally, PUSCH or physical uplink control channel (PUCCH) transmissions (including repetitions, if any) other than PUCCH transmissions with sidelink (SL) hybrid automatic repeat request acknowledgment (HARQ-ACK) reports are either of priority index 0 or priority index 1. For configured grant PUSCH transmissions, the UE determines the priority index from the phy-PriorityIndex, if provided.

[0093] For PUSCH transmissions with semi-persistent channel state information (CSI) reports, the UE determines the priority index from the priority indicator field (if provided) in the DCI format that activates semi-persistent CSI reports. For PUSCH or PUCCH transmissions other than PUCCH transmissions with SL HARQ-ACK reports, if the UE is not provided with a priority index, the priority index shall be 0.

[0094] It can be seen that conventional solutions do not support STxMP for UL transmissions. Therefore, various aspects, including configuration and collision handling, need to be enhanced to support STxMP for UL transmissions, such as a combination of CG and DG transmissions, a combination of two DG transmissions, or a combination of two CG transmissions.

[0095] To solve at least some of the above problems, embodiments of the present disclosure provide a solution for STxMP for UL transmission, the principles and implementations of which are described in detail below with reference to the drawings.

[0096] Several embodiments will be described below with respect to two TRPs and two panels. However, it should be understood that these embodiments are provided for illustrative purposes only and are intended to assist those skilled in the art in understanding and practicing the present disclosure, and are not intended to imply any limitations on the scope of the present disclosure. The present disclosure described herein may be embodied in various forms other than those described below.

[0097] Furthermore, it should be understood that operations at the terminal device 110 and the network device 120 should be coordinated with each other. In other words, the network device 120 and the terminal device 110 should have a common understanding of settings, parameters, etc. Such a common understanding can be achieved by appropriate interaction between the network device 120 and the terminal device 110, or by both the network device 120 and the terminal device 110 applying the same rules / policies. In the following, some operations are described from the perspective of the terminal device 110, but it should be understood that the corresponding operations should be performed by the network device 120. Similarly, some operations are described from the perspective of the network device 120, but it should be understood that the corresponding operations should be performed by the terminal device 110. Merely for the sake of brevity, some identical or similar content is omitted herein. Example Settings and Instructions for STxMP

[0098] 3, which illustrates a signaling flow 300 of configuration and indication for STxMP according to some embodiments of the present disclosure. For ease of explanation, the signaling flow 300 will be described with reference to FIG. 1, for example, by using the terminal device 110 and the network device 120.

[0099] The network device 120 transmits, to the terminal device 110, configuration information for UL transmission associated with the first SRS resource set and the second SRS resource set (305). The configuration information may be transmitted using a single signaling or multiple signalings. The UL transmission may include a first UL transmission and a second UL transmission. The configuration information may include a first parameter set and a second parameter set to be used for the uplink transmission, a first indication of a simultaneous transmission scheme for the UL transmission, and mapping information. The mapping information indicates at least one of a correspondence relationship between the first and second parameter sets and the first and second SRS resource sets or a combination of the number of layers associated with the first and second parameter sets.

[0100] In other words, the configuration information may indicate the UL MTRP scheme to be used and may include configurations that support the indicated STxMP scheme. For example, a combination and / or restriction of an SRS resource set, an SRS resource, precoding, and the number of layers may be indicated. The configuration information may be used by the terminal device 110 to interpret the value of the indicated SRS resource indicator (e.g., the srs-ResourceIndicator or "SRI" field) and / or the precoding information and the number of layers (e.g., the precodingAndNumberOfLayers or "TPMI" field). In the case of Type 1 CG, the configuration information may be included in one or two CG configurations. In the case of DG and Type 2 CG, at least a part of the configuration information may be transmitted via DCI. Details of the configuration information will be described later.

[0101] Terminal device 110 receives the configuration information from network device 120. Terminal device 110 then determines, based at least in part on the first instruction and the mapping information, first and second parameter sets to be associated with the first and second SRS resource sets, respectively (310). In other words, terminal device 110 determines the association of the first and second parameter sets with the first and second SRS resource sets. For example, terminal device 110 may determine that the first parameter set is associated with the first SRS resource set and the second parameter set is associated with the second SRS resource set. Alternatively, terminal device 110 may determine that the first parameter set is associated with the second SRS resource set and the second parameter set is associated with the first SRS resource set.

[0102] Terminal device 110 then performs uplink transmission with network device 120 based on the first and second parameter sets (315). For example, if terminal device 110 determines that the first parameter set is associated with the first SRS resource set and the second parameter set is associated with the second SRS resource set, terminal device 110 may perform a first UL transmission to a first TRP 141 associated with the first SRS resource set based on the first parameter set and a second UL transmission to a second TRP 142 associated with the second SRS resource set based on the second parameter set.

[0103] Regarding the setting information, several embodiments will be described.

[0104] As described above, the configuration information may include a first indication of a simultaneous transmission method for UL transmission. For example, the terminal device 110 may be provided with an indication that it supports the STxMP method in the CG configuration and / or the DG configuration. The first indication may indicate the simultaneous transmission method in any appropriate manner. Some examples are described below.

[0105] In some embodiments, the first indication (e.g., an explicit indication of SFN STxMP or SDM STxMP) may explicitly indicate the UL MTRP scheme to be used. Alternatively, the first indication may implicitly indicate the UL MTRP scheme to be used.

[0106] In some embodiments, if two SRS resource sets are configured, terminal device 110 may assume that the UL MTRP scheme is enabled. Furthermore, if the M-DCI mode is enabled, a CORESETPoolIndex value associated with the SRS resource set may be configured. Furthermore, if the 2-TA mode is enabled, a TAG ID associated with the SRS resource set may be configured.

[0107] In such an embodiment, terminal device 110 may need to be provided with additional signaling regarding the exact MTRP scheme to be used. More specifically, terminal device 110 may need signaling to distinguish between STxMP and TDM repetition. Furthermore, terminal device 110 may need signaling to distinguish between SFN STxMP and SDM STxMP.

[0108] In some embodiments, for CG, an additional IE may be added to the upper layer parameter ConfiguredGrantConfig, which is applicable to both Type 1 CG and Type 2 CG. For example, an IE with the value ENUMERATED{SFN,SDM} (with a name such as StxmpSchemePUSCH-r18) may be used to distinguish between the SFN and SDM schemes. Alternatively or additionally, an IE with the value ENUMERATED{TDM,SFN,SDM} or the value ENUMERATED{TDM,STxMP} (with a name such as MIMOParam-r18) may be used. Alternatively or additionally, the number of repetitions (e.g., parameter repK) may be set to "1" or may not be present to distinguish between STxMP and TDM repetitions (e.g., greater than 1). In this case, the aforementioned IE MIMOParam-r18 may not be required.

[0109] Alternatively, the first instruction of the STxMP method may be provided per terminal device or per BWP / CC, which means that the first instruction is not included in the IE ConfiguredGrantConfig. In each IE ConfiguredGrantConfig, whether STxMP is applicable is determined by other instructions in the configuration information as described above.

[0110] In some embodiments, in the case of a DG, the first indication (ie, the STxMP indication) may be provided separately in another IE, for example, the IE ServingCellConfig.

[0111] In addition to the first instruction, the configuration information may further include or indicate a first parameter set and a second parameter set to be used for the UL transmission. The first and second parameter sets, individually or collectively referred to as parameter sets, may include any parameters for performing the UL transmission.

[0112] In some embodiments, the parameter set may include at least one parameter used for power control, such as parameters pathlossReferenceIndex, p0-PUSCH-Alpha, and powerControlLoopToUse in an RRC message, or a field “TPC Command for Scheduled PUSCH” or “Open Loop Power Control Parameter Set Indication” in a DCI. Alternatively or additionally, the parameter set may include an SRS Resource Indicator (SRI), such as a parameter srs-ResourceIndicator in an RRC message, or a field “SRS Resource Indicator” in a DCI. Alternatively or additionally, the parameter set may include at least one of precoding information (e.g., TPMI), the number of layers, a control response set identifier, or a TAG identifier. It should be noted that when the term “parameter set” or “set of parameters” is used, it refers to one or more of the above-mentioned parameters, but not necessarily all of them.

[0113] In some embodiments, for example, when one CG configuration is configured to support STxMPP, the first parameter set may include one or more of the following: parameter pathlossReferenceIndex, parameter p0-PUSCH-Alpha, parameter powerControlLoopToUse, parameter srs-ResourceIndicator, or parameter precodingAndNumberOfLayers. The first parameter set may further include one or more of the following: parameter AssociatedCORESETPoolIndex, or parameter AssociatedTAG. Correspondingly, the second parameter set may include one or more of the following: parameter pathlossReferenceIndex2, parameter p0-PUSCH-Alpha2, parameter powerControlLoopToUse2, parameter srs-ResourceIndicator2, or parameter precodingAndNumberOfLayers2. The first parameter set may further include one or more of the following: parameter AssociatedCORESETPoolIndex2, or parameter AssociatedTAG2.

[0114] In some embodiments, a single-panel codebook or multiple-panel codebooks may be configured for CG transmission based on the capabilities of terminal device 110. For a single-panel codebook, each SRS resource set may be associated with a codebook for a parameter N1 for the number of horizontal elements, a parameter N2 for the number of vertical elements, and parameters O1 and O2 for oversampling factors. In some embodiments, based on the configuration or capabilities of terminal device 110, parameters (N1, N2) can take on values ​​of (4, 1) or (2, 2), and parameters (O1, O2) can take on values ​​of (1, 1) and (2, 1).

[0115] In the case of a multiple panel codebook, two additional SRS resource sets may be associated with the codebook for parameter N. In some embodiments, N may be equal to 2 based on the configuration or capabilities of terminal device 110.

[0116] In the following, some embodiments will be described with respect to Type 1 CG and RRC signaling, i.e., the higher layer parameter rrc-ConfiguredUplinkGrant. It should be understood that for DG and / or Type 2 CG, the indications or parameters described with respect to the higher layer parameter rrc-ConfiguredUplinkGrant may be provided via DCI. The correspondence between the higher layer parameters in RRC signaling and the fields in DCI can be assumed, and therefore, the same content will not be described again with respect to DCI. For example, the parameter SRS_resource_set_index in RRC signaling corresponds to the field "SRS resource set indicator" in DCI. The parameter srs-ResourceIndicator in RRC signaling corresponds to the field "SRS resource indicator" ("SRI") in DCI. The parameter precodingAndNumberOfLayers in RRC signaling corresponds to the field "Precoding Information and Number of Layers" ("TPMI") in DCI. The parameter srs-ResourceIndicator2 in the RRC signaling corresponds to the field "Second SRS Resource Indicator" ("SRI2") in the DCI. The parameter precodingAndNumberOfLayers2 in the RRC signaling corresponds to the field "Second Precoding Information and Number of Layers" ("TPMI2") or "Second Precoding Information" ("TPMI2") in the DCI. The parameter AssociatedCORESETPoolIndex in the RRC signaling corresponds to the field CORESETPoolIndex value associated with the CORESET for scheduling the DCI.

[0117] In addition to the first instruction and the parameter set, the configuration information may include mapping information. The mapping information may indicate a correspondence between the first and second parameter sets and the first and second SRS resource sets, which is also referred to as "ordering information." Alternatively or additionally, the mapping information may indicate a combination of the number of layers associated with the first and second parameter sets, which is also referred to as "layer combination."

[0118] In some embodiments, the correspondence between parameter sets and SRS resource sets may be indicated implicitly or by default. For example, two parameter sets are configured in higher layer parameters or indicated in DCI. Correspondingly, a first parameter set is associated with a first SRS resource set by default, and a second parameter set is associated with a second SRS resource set by default. In some embodiments, when STxMP transmission falls back to single-panel transmission, the first parameter set can be associated with the first SRS resource set by default, and the second parameter set can be disabled.

[0119] In the present disclosure, a first correspondence or a first order may refer to a first parameter set being associated with a first SRS resource set and a second parameter set being associated with a second SRS resource set. Similarly, a second correspondence or a second order may refer to a first parameter set being associated with a second SRS resource set and a second parameter set being associated with the first SRS resource set.

[0120] Alternatively or additionally, in some embodiments, the correspondence between the parameter sets and the SRS resource sets may be indicated by a specific instruction in the configuration information, such as an SRS resource set instruction. Specifically, a first value of the specific instruction may indicate that the first parameter set is associated with the first SRS resource set and that the second parameter set is disabled. As used herein, the expression "a parameter set is disabled" means that the parameter set is not provided or may be ignored. A second value of the specific instruction may indicate that the first parameter set is associated with the second SRS resource set and that the second parameter set is disabled. Alternatively or additionally, a third value of the specific instruction may indicate that the first parameter set is associated with the first SRS resource set and that the second parameter set is associated with the second SRS resource set. Alternatively or additionally, a fourth value of the specific instruction may indicate that the first parameter set is associated with the second SRS resource set and that the second parameter set is associated with the first SRS resource set.

[0121] In a Type 1 CG example, when one CG configuration is configured to support STxMP, two parameter sets may be included in higher layer parameters, such as rrc-ConfiguredUplinkGrant. In this example, the parameter SRS_resource_set_index may be provided in the CG configuration to provide ordering information (e.g., which TRP, which terminal device 110 panel, and which SRS resource set the parameter set is associated with). A first value of the parameter SRS_resource_set_index may indicate that the first parameter set is associated with the first SRS resource set and that the second parameter set is absent or negligible. A second value of the parameter SRS_resource_set_index may indicate that the first parameter set is associated with the second SRS resource set and that the second parameter set is absent or negligible. An optional third value of the parameter SRS_resource_set_index may indicate that the first parameter set is associated with the first SRS resource set and that the second parameter set is associated with the second SRS resource set. An optional fourth value of the parameter SRS_resource_set_index may indicate that the first parameter set is associated with the second SRS resource set and the second parameter set is associated with the first SRS resource set.

[0122] In some embodiments, the configuration information may include a layer combination indication indicating the number of layers associated with the first and second parameter sets. For example, an SRS resource set indication may be used as the layer combination indication. Specifically, a fifth value of the layer combination indication may indicate that the first parameter set is associated with the first number of layers and the second parameter set is associated with the second number of layers. A sixth value of the layer combination indication may indicate that the first parameter set is associated with the second number of layers and the second parameter set is associated with the first number of layers. An optional seventh value of the layer combination indication may indicate that both the first and second parameter sets are associated with the first number of layers. An eighth value of the layer combination indication may indicate that both the first and second parameter sets are associated with the second number of layers.

[0123] Continuing with the above example of one CG configuration for Type 1 CG, when SDM STxMP is configured as a UL MTRP scheme, a layer combination indication is required. The parameter SRS_resource_set_index may also be used to indicate layer combination. For example, a fifth value of the parameter SRS_resource_set_index may indicate that the first parameter set is associated with the first SRS resource set, the number of associated layers is 1, and the second parameter set is associated with the second SRS resource set, the number of associated layers is 2. A sixth value of the parameter SRS_resource_set_index may indicate that the first parameter set is associated with the first SRS resource set, the number of associated layers is 2, and the second parameter set is associated with the second SRS resource set, the number of associated layers is 1. An optional seventh value of the parameter SRS_resource_set_index may indicate that the first parameter set is associated with the first SRS resource set, the associated number of layers is 1, and the second parameter set is associated with the second SRS resource set, the associated number of layers is 1. An optional eighth value of the parameter SRS_resource_set_index may indicate that the first parameter set is associated with the first SRS resource set, the associated number of layers is 2, and the second parameter set is associated with the second SRS resource set, the associated number of layers is 2.

[0124] In this example, we will assume that the correspondence is shown in the default manner, but this assumption is an example without any limitation.

[0125] In some embodiments, the correspondence and the layer combination may be jointly indicated. For example, a specific instruction in the configuration information may be used to indicate both the correspondence and the layer combination. Specifically, a ninth value of the specific instruction may indicate that a first parameter set is associated with a first SRS resource set and a first number of layers, and that a second parameter set is associated with a second SRS resource set and a second number of layers. A tenth value of the specific instruction may indicate that a first parameter set is associated with a first SRS resource set and a second number of layers, and that a second parameter set is associated with a second SRS resource set and a first number of layers. An optional eleventh value of the specific instruction may indicate that a first parameter set is associated with a second SRS resource set and a first number of layers, and that a second parameter set is associated with a first SRS resource set and a second number of layers. An optional twelfth value of the particular indication may indicate that the first parameter set is associated with a second SRS resource set and a second number of layers, and the second parameter set is associated with the first SRS resource set and the first number of layers.

[0126] Continuing with the above example of one CG configuration for Type 1 CG, when SDM STxMP is configured as a UL MTRP scheme, layer combination indication is required. The parameter SRS_resource_set_index may be used to indicate both ordering information and layer combination. For example, a ninth value of the parameter SRS_resource_set_index may indicate that the first parameter set is associated with the first SRS resource set, the number of associated layers is 1, and the second parameter set is associated with the second SRS resource set, the number of associated layers is 2. A tenth value of the parameter SRS_resource_set_index may indicate that the first parameter set is associated with the first SRS resource set, the number of associated layers is 2, and the second parameter set is associated with the second SRS resource set, the number of associated layers is 1. An optional eleventh value of the parameter SRS_resource_set_index may indicate that the first parameter set is associated with the second SRS resource set, the associated number of layers is 1, and the second parameter set is associated with the first SRS resource set, the associated number of layers is 2. An optional twelfth value of the parameter SRS_resource_set_index may indicate that the first parameter set is associated with the second SRS resource set, the associated number of layers is 2, and the second parameter set is associated with the first SRS resource set, the associated number of layers is 1.

[0127] In some embodiments, separate instructions may be used for the layer combinations, which may indicate at least one of the first number of layers and the second number of layers, the first number of layers and the total number of layers in the combination, or the first number of layers and an indication of whether the second number of layers is the same as or different from the first number of layers.

[0128] For example, the indication may have values ​​indicating the layer combinations (1,1), (2,2), (1,2), and optionally (2,1), respectively. Alternatively, the indication may have values ​​indicating that the layer combination of (1,2) is to be used in a first order, that the layer combination of (1,2) is to be used in a second order, that the layer combination of (2,1) is to be used in a first order, and that the layer combination of (2,1) is to be used in a second order, respectively. In some embodiments, based on the capabilities of terminal device 110, the layer combinations may include (1,3) and (3,1), with or without a mapping order.

[0129] Alternatively or additionally, the indication may have a value indicating the total number of layers, for example, 2, 3, or 4. In some embodiments, the number of layers may be up to 8, based on the capabilities of terminal device 110.

[0130] Alternatively or additionally, the indications may have values ​​indicating the same and different numbers of layers, respectively. In this case, another parameter or indication, such as srs-ResourceIndicator or precodingAndNumberOfLayers, may further provide an indication of the number of layers. For example, if the number of layers is the same and srs-ResourceIndicator and precodingAndNumberOfLayers indicate one or two layers, srs-ResourceIndicator2 and precodingAndNumberOfLayers2 are associated with one or two layers, respectively. If the number of layers is different (or (1,2) or a total of three), and srs-ResourceIndicator and precodingAndNumberOfLayers indicate one or two layers, srs-ResourceIndicator2 and precodingAndNumberOfLayers2 are associated with two or one layer, respectively.

[0131] Furthermore, if the individual instructions indicate a layer combination of (1,1), a layer combination of (2,2), or a total number of 2 or 4, or the same number of layers, the parameter SRS_resource_set_index is not present or is ignored in interpreting the number of layers.

[0132] In one example, if a layer combination of 1 layer and 2 layers (or a layer combination of 2 layers and 1 layer) is supported or indicated and a 1-layer transmission is associated with a first SRS resource set, terminal device 110 expects a 2-layer transmission to be associated with a second SRS resource set, or terminal device 110 does not expect a 1-layer transmission to be associated with the second SRS resource set, or vice versa. The number of layers indicated via srs-ResourceIndicator,precodingAndNumberOfLayers may be applied to the interpretation (e.g., used to estimate the number of layers) of the value indicated via srs-ResourceIndicator2,precodingAndNumberOfLayers2. Furthermore, in the DG and Type-2CG DCIs, the term "applied to the interpretation" may also include determining a bit width or a corresponding lookup table (or raw data of the table) for the "SRI2" field and / or the "TPMI2" field in the DCI, as described below.

[0133] In some embodiments, when SFN STxMP is configured as the UL MTRP scheme, the number of layers indicated via srs-ResourceIndicator,precodingAndNumberOfLayers is the same as the number of layers indicated via srs-ResourceIndicator2,precodingAndNumberOfLayers2. In other words, the number of layers indicated via srs-ResourceIndicator,precodingAndNumberOfLayers applies to the interpretation of the value indicated via srs-ResourceIndicator2,precodingAndNumberOfLayers2. Separate indications may be used for one or two layers. In some embodiments, separate indications may be used for three or four layers based on the capabilities of terminal device 110.

[0134] Alternatively or additionally, if the number of layers is determined by "SRS_resource_set_index" or the layer combination indication, the parameters "srs-ResourceIndicator" and "precodingAndNumberOfLayer" are not used to determine the number of layers.

[0135] Alternatively or additionally, if the number of layers is determined by "SRS_resource_set_index" or the layer combination indication and the parameters "srs-ResourceIndicator" and "precodingAndNumberOfLayer", the parameters "srs-ResourceIndicator2" and "precodingAndNumberOfLayer2" are not used to determine the number of layers.

[0136] In some embodiments, when PUSCH repetition type A or PUSCH repetition type B is configured or enabled for STxMP, PUSCH transmission as used herein may refer to actual transmission or nominal transmission. In some embodiments, to increase diversity, when PUSCH repetition type A or PUSCH repetition type B is configured or enabled, repetitions may be transmitted in alternating mapping order and / or layer number as indicated by a first indication. For example, if the indicated order is first, then second, the alternating order would be second, then first. Furthermore, alternation for more than two repetitions can be performed in a cyclic or sequential manner as configured.

[0137] Some embodiments are described above in which the first and second parameter sets are associated with a single configuration. Alternatively, in some embodiments, the first parameter set may be associated with the first configuration and the second parameter set may be associated with the second configuration. In such embodiments, the configuration information further indicates the association between the first configuration and the second configuration.

[0138] Some such embodiments are described taking Type 1 CG as an example: In Type 1 CG, if two CG configurations are configured to support STxMP, only a single parameter set (e.g., the first parameter set) may be present in the rrc-ConfiguredUplinkGrant of each CG configuration.

[0139] The association between these two CG configurations is necessary to indicate to the terminal device 110 that these two CGs are available for STxMP. For example, the association may be indicated via the index of the CG configuration (e.g., ConfiguredGrantConfigIndex or configuredGrantConfigIndexMAC).

[0140] In one example, the STxMP scheme and the associated index of the two CG settings may be provided, for example, as follows: STxMPCG-r18::=SEQUENCE{ StxmpSchemePUSCH-r18 ENUMERATED{SFN,SDM} ConfiguredGrantConfigIndex1 ConfiguredGrantConfigIndex-r18 ConfiguredGrantConfigIndex2 ConfiguredGrantConfigIndex-r18 LayerCombination ENUMERATED {same, different} } Here, the parameter StxmpSchemePUSCH-r18 indicates the STxMP scheme, the parameters ConfiguredGrantConfigIndex1 and ConfiguredGrantConfigIndex1 are indexes of two settings, and the parameter LayerCombination is the layer combination instruction described above.

[0141] In another example, an index of the associated CG setting can be provided within the other CG, for example: AssociatedCGForSTxMP ConfiguredGrantConfigIndex-r18 Here, the parameter AssocatiedCGForSTxMP is the index of the associated CG setting.

[0142] In yet another example, each of the two CG configurations can be provided with the same identifier (also called a "linkID") to identify that the two CGs are used in conjunction, for example: CGForSTxMPLinkID INTEGER(0..maxNrofCGSTxMPLinks-r18) Here, the parameter CGForSTxMPLinkID is the linkID.

[0143] Furthermore, in some embodiments, a parameter SRS_resource_set_index provided in each CG configuration may be used to indicate the correspondence. For example, a first value may indicate that the parameter set in the CG is associated with a first SRS resource set, and a second value may indicate that the parameter set in the CG is associated with a second SRS resource set. Alternatively, the parameter SRS_resource_set_index may not be explicitly provided. Instead, one or more predefined rules may be applied, e.g., associating a CG configuration with a smaller index or lower order in the CG list with a first SRS resource.

[0144] When SDM STxMP is configured as the UL MTRP method, a layer combination indication is required. The parameter SRS_resource_set_index can also be used as a layer combination indication. For example, the third value may indicate that a parameter set in a CG is associated with a first SRS resource set and the number of associated layers is 1. The fourth value may indicate that a parameter set in a CG is associated with a first SRS resource set and the number of associated layers is 2. The fifth value may indicate that a parameter set in a CG is associated with a second SRS resource set and the number of associated layers is 1. The sixth value may indicate that a parameter set in a CG is associated with a second SRS resource set and the number of associated layers is 2.

[0145] Alternatively, separate IEs may be used for layer combinations.

[0146] In some embodiments, the parameter SRS_resource_set_index in a first CG may be applied to the interpretation of SRS_resource_set_index and parameter set in a second CG. For example, if in the first CG SRS_resource_set_index is associated with a first SRS resource set and one layer (e.g., has a value of 3), then in the second CG SRS_resource_set_index has a value of 6 or is absent, meaning that SRS_resource_set_index is associated with a second SRS resource set and two layers.

[0147] In some embodiments, if a layer combination of 1 layer and 2 layers (or a layer combination of 2 layers and 1 layer) is supported or indicated and a 1-layer transmission is associated with a first SRS resource set, terminal device 110 expects a 2-layer transmission to be associated with a second SRS resource set, or does not expect a 1-layer transmission to be associated with the second SRS resource set, or vice versa.

[0148] In some embodiments, when SFN STxMP is configured as an UL MTRP scheme, the number of layers indicated by srs-ResourceIndicator,precodingAndNumberOfLayers via the first CG is the same as the number of layers indicated by srs-ResourceIndicator,precodingAndNumberOfLayers via the second CG. In other words, the number of layers indicated by srs-ResourceIndicator,precodingAndNumberOfLayers in the first CG is applied to the interpretation of the value indicated by srs-ResourceIndicator,precodingAndNumberOfLayers in the second CG. Furthermore, the parameter SRS_resource_set_index in the first CG may be applied to the interpretation of SRS_resource_set_index in the second CG.

[0149] Alternatively or additionally, if the number of layers is determined by the parameter SRS_resource_set_index, the layer combination indication, or a parameter in a CG, the parameters "srs-ResourceIndicator" and "precodingAndNumberOfLayer" in another CG are no longer used to determine the number of layers.

[0150] Several embodiments have been described above. Next, several more embodiments will be described regarding layer combinations and order information.

[0151] In some embodiments, the SRS resource set indication (e.g., SRS_resource_set_index) may be used to indicate layer combination and ordering information. Alternatively, in some embodiments, the SRS resource set indication (e.g., SRS_resource_set_index) may be used to indicate layer combination information or ordering information. In some embodiments, the ordering information may not be explicitly configured, and instead a default order may be assumed. In some embodiments, the layer combination may be provided via dedicated signaling other than the SRS resource set indication (e.g., SRS_resource_set_index). If the layer combination and ordering information is configured, the values ​​of the first parameter set may be applied to the interpretation of the second parameter set.

[0152] In summary, there may be two correspondences or two orders. In the first order, the first SRS resource set is associated with the first parameter set, and the second SRS resource set is associated with the second parameter set. In the second order, the first SRS resource set is associated with the second parameter set, and the second SRS resource set is associated with the first parameter set. There are four layer combinations: (1,1), (1,2), (2,1), and (2,2), and the layer combinations for the SFN scheme are considered to be (1,1) and (2,2). This results in eight possibilities, as shown in Table 1.

[0153] Furthermore, in the fallback case, there may be only the first SRS resource set or only the second SRS resource set, each with 1, 2, 3, or 4 layers, resulting in eight fallback possibilities. In this case, the first or second SRS resource set may be determined by default or indicated by an SRS resource set indicator (e.g., SRS_resource_set_index), and the number of layers may be indicated by the first SRI or TPMI. JPEG2026507589000002.jpg246149

[0154] As mentioned above, the configuration value (e.g., the number of layers) determined for the first SRS resource set may apply to the interpretation of the SRI2 field and / or the TMPI field, or the interpretation of the parameters srs-ResourceIndicator2,precodingAndNumberOfLayers2. For example, this may affect the bit width of the associated DCI field or the configuration value of the associated RRC IE. As another example, the corresponding lookup table (or table rows) may be affected.

[0155] In some embodiments, if the number of layers is not indicated, the possible values ​​of SRI, TPMI, SRI2, or TPMI2 should include the sum of all possible combinations of the number of layers. For example, the number of candidate values ​​that can be indicated via the SRS resource indicator is JPEG2026507589000003.jpg1521, and the bit width of SRI or SRI2 is It can be JPEG2026507589000004.jpg1074.

[0156] If the number of layers is indicated or known, the possible values ​​of SRI, TPMI, SRI2, or TPMI2 may include only the possible combinations of the indicated number of layers, or may include only the most possible combinations of all possible number of layers. For example, the number of candidate values ​​that can be indicated via the SRS resource indicator is JPEG2026507589000005.jpg1045, and the bit width of SRI or SRI2 is It can be JPEG2026507589000006.jpg1090.

[0157] N SRS is the number of SRS resources in the corresponding SRS resource set. X is the maximum number of layers that can be transmitted, e.g., min(L max ,N SRS ),L max is the maximum rank, or the configured maximum number of layers, or the maximum number of supported layers reported by terminal device 110. In some embodiments, X and L max can be per panel or per SRS resource set.

[0158] In some embodiments, terminal device 110 may determine a first value of a first SRI according to a first portion of a first predefined lookup table. Then, terminal device 110 may determine a second value of a second SRI according to a second portion of the first predefined lookup table. The second portion may be the same as or different from the first portion and is determined based on the first value, the first indication, and the mapping information.

[0159] 4A shows an example lookup table 400A for the second SRI indication (SRI2 field in DCI or srs-ResourceIndicator2 or srs-ResourceIndicator in the second CG) for non-codebook-based PUSCH transmission, where Lmax=2 or Lmax,2=2. maxis given by the parameter maxMIMO-Layers of the PUSCH-ServingCellConfig of the serving cell, if configured; otherwise, it is given by the maximum number of PUSCH layers supported by the UE for the serving cell in non-codebook-based operation. Lmax,2 is the maximum number of layers for the second panel, second TRP, or second SRS resource set. N_SRS is the number of SRS resources in the corresponding SRS resource set.

[0160] Table 400A illustrates a mapping from a second SRI indication to one or more resource IDs in an SRS resource set. Specifically, the items in the first, third, and fifth columns of table 400A represent values ​​of the second SRI indication (the SRI2 field in the DCI, the srs-ResourceIndicator2, or the srs-ResourceIndicator in the second CG), and the items in the second, fourth, and sixth columns represent one or more resource IDs in the corresponding SRS resource set. For example, a value of 0 in the second, fourth, and sixth columns may refer to the first SRS resource (e.g., the SRS resource with the lowest ID) in the corresponding SRS resource set. As another example, a value of (0, 1) in the second, fourth, and sixth columns may refer to the first and second SRS resources (e.g., the two SRS resources with the lowest IDs) in the corresponding SRS resource set.

[0161] In the case of SDM STxMP and a layer combination of one layer and two layers or a layer combination of two layers and one layer, when the first SRI is associated with a two-layer transmission, the value of the second SRI may be determined using the solid-lined area of ​​table 400A. In the solid-lined area, the value of the second SRI indication corresponds to one SRS resource in the corresponding SRS resource set. As a result, one SRS resource is determined. When the first SRI is associated with a one-layer transmission, the value of the second SRI may be determined using the dashed-lined area of ​​table 400A. In the dashed-lined area, the value of the second SRI indication corresponds to two SRS resources in the corresponding SRS resource set. As a result, two SRS resources are determined.

[0162] For SFN STxMP, when the first SRI is associated with a one-layer transmission, the value of the second SRI may be determined using the solid-lined area of ​​table 400A. In the solid-lined area, the value of the second SRI indication corresponds to one SRS resource in the corresponding SRS resource set. As a result, one SRS resource is determined. When the first SRI is associated with a two-layer transmission, the value of the second SRI may be determined using the dashed-lined area of ​​table 400A. In the dashed-lined area, the value of the second SRI indication corresponds to two SRS resources in the corresponding SRS resource set. As a result, two SRS resources are determined.

[0163] Alternatively or additionally, in some embodiments, terminal device 110 may determine a third value of the first TPMI in response to a first portion of a second predefined lookup table. Terminal device 110 may determine a fourth value of the second TPMI in response to a second portion of the second predefined lookup table. The second portion may be the same as or different from the first portion and may be determined based on the third value, the first instruction, and the mapping information.

[0164] FIG. 4B shows an example lookup table 400B for second precoding information (e.g., TPMI2 field, precodingAndNumberOfLayers2, precodingAndNumberOfLayers in the second CG) for four antenna ports when the transform precoder is disabled, maxRank=2 (or maxRank,2=2) and ul-FullPowerTransmission=fullpowerMode1.

[0165] Table 400B shows a mapping from the second precoding information to the UL precoding codebook. Specifically, the items in the first and third columns of table 400B represent values ​​of the second precoding information (e.g., TPMI2 field, precodingAndNumberOfLayers2, precodingAndNumberOfLayers in the second CG), and the items in the second and fourth columns represent indices of the UL precoding codebook.

[0166] For SDM STxMP and a layer combination of 1 layer and 2 layers or a layer combination of 2 layers and 1 layer, if the first TPMI is associated with a 2-layer transmission, the value of the second TPMI may be determined using the solid-lined area of ​​table 400B. The solid-lined area is used for the 1-layer case. If the first TPMI is associated with a 1-layer transmission, the value of the second TPMI may be determined using the dashed-lined area of ​​table 400B. The dashed-lined area is used for the 2-layer case.

[0167] For SFN STxMP, if the first TPMI is associated with a one-layer transmission, the value of the second TPMI may be determined using the solid-lined area of ​​table 400B. The solid-lined area is used for the one-layer case. If the first TPMI is associated with a two-layer transmission, the value of the second TPMI may be determined using the dashed-lined area of ​​table 400B. The dashed-lined area is used for the two-layer case.

[0168] 4A and 4B are for illustrative purposes only and are not intended to be limiting in any way. There may be multiple tables for each of CB-based and NCB-based transmissions, depending on the antenna port, transform precoder, maximum rank, full power mode, etc.

[0169] In some embodiments, terminal device 110 may perform a capability report to network device 120. The capability report may indicate at least one of: whether terminal device 110 supports STxMP for CG (e.g., one or both of SDM and SFN), whether terminal device 110 supports one CG configuration for STxMP for CG or two CG configurations for STxMP for CG, the supported number of configurable CG configurations for STxMP for CG, the supported number of candidate values ​​for the SRS resource set indicator, the supported number of bit widths for the SRS resource set indicator in the DCI, whether terminal device 110 supports a layer combination indication, supported layer combinations, whether terminal device 110 supports a single-panel or multiple-panel codebook for CG transmission, whether terminal device 110 supports more than four Tx for CG, and whether terminal device 110 supports PUSCH repetition (e.g., one or both of Type A and Type B) for STxMP (e.g., one or both of SDM and SFN).

[0170] The above configuration information allows STxMP to be supported, thus improving capacity and reliability and reducing latency. Example collision handling for STxMP

[0171] 5, which illustrates a signaling flow 500 of collision handling for STxMP according to some embodiments of the present disclosure. For ease of explanation, the signaling flow 500 will be described with reference to FIG. 1, for example, by using the terminal device 110 and the network device 120.

[0172] Network device 120 transmits (505) configuration information to terminal device 110 indicating a first configuration for a first uplink transmission and a second configuration for a second uplink transmission. The second uplink transmission at least partially overlaps with the first uplink transmission during a period. The first configuration indicates a first parameter set, and the second configuration indicates a second parameter set determined at least in part based on the first parameter set. In some embodiments, the second parameter set may be determined by network device 110.

[0173] In some embodiments, the first and second settings may be associated with different CORSETs. Alternatively or additionally, the first and second settings may be associated with different TAGs.

[0174] In some embodiments, an indication to enable STxMP for UL transmission may be provided from network device 120 to terminal device 110. For example, the indication may be general signaling STxMP-PUSCH.

[0175] The terminal device 110 simultaneously performs the first and second uplink transmissions during the time period based on the first and second parameter sets (515). Compared to legacy solutions where CG or DG PUSCH transmissions are prioritized in the case of time-domain collisions, the STxMP of the present disclosure can increase uplink capacity, reduce scheduling delays, and improve flexibility.

[0176] In some embodiments, the first uplink transmission may be a CG uplink transmission (e.g., a CG PUSCH transmission) and the second uplink transmission may be a DG uplink transmission (e.g., a DG PUSCH transmission). In such embodiments, the indication to enable STxMP for the UL transmission may be specific signaling STxMP-CGandDG. In this way, STxMP PUSCH transmission with DG and CD simultaneously can be supported, increasing scheduling flexibility and reducing delay.

[0177] In such embodiments where the first UL transmission is a CG PUSCH transmission and the second UL transmission is a DG PUSCH transmission, some common assumptions may be made. For example, unless otherwise specified, the CG PUSCH has a higher priority than the DG PUSCH. As another example, the configuration of STxMP CG PUSCH transmission and DG PUSCH transmission is explicitly provided to the terminal device 110 via, for example, a parameter STxMP-CGandDG in ServingCellConfig. The value of the parameter "STxMP-CGandDG" may be ENUMERATED {enable}. Alternatively or additionally, the value may indicate one of the scenarios described below. A capability report from the terminal device 110 to the network device 120 is required to indicate whether the terminal device 110 can support STxMP-CGandDG.

[0178] Alternatively or additionally, for each scenario described below, a separate capability report is required from the terminal device 110 to the network device 120. The capability report from the terminal device 110 to the network device 120 may indicate at least one of whether the terminal device 110 supports simultaneous transmission of a single TRP CG and a single TRP DG, whether the terminal device 110 supports simultaneous transmission of a single TRP CG and multiple TRPs or STxMP DGs, whether the terminal device 110 supports simultaneous transmission of multiple TRPs or STxMP CGs and multiple TRPs or STxMP DGs, and whether the terminal device 110 supports simultaneous transmission of multiple TRPs or STxMP CGs and a single TRP DG.

[0179] Two SRS resource sets may be configured for CB-based transmission and NCB-based transmission, respectively, for example, by setting the use to "codebook" or "nonCodebook." The two SRS resource sets may be configured in srs-ResourceSetToAddModList and / or srs-ResourceSetToAddModListDCI-0-2. If both of the above two IEs are configured, the SRS resource set(s) configured in the IE srs-ResourceSetToAddModList may be used as the two SRS resource sets. In some embodiments, unless otherwise specified, the first SRS resource set may be the SRS resource set with the smaller resource set ID.

[0180] In one example, for each serving cell and each configured uplink grant, if configured and activated, the medium access control (MAC) entity shall perform the following: 1> If the PUSCH period of the configured uplink grant does not overlap with the PUSCH period of the uplink grant received on the physical downlink control channel (PDCCH), or if the PUSCH period of the configured uplink grant overlaps with the PUSCH period of the uplink grant received on the PDCCH but STxMP-CGandDG is configured for the serving cell: 1> If the PUSCH period of the configured uplink grant does not overlap with the PUSCH period for the same TRP of the uplink grant received in the PDCCH or random access response, or the PUSCH period of the Message A (MSGA) payload for the serving cell: 2> Set the HARQ process ID to the HARQ process ID associated with this PUSCH period; 2> If the configuredGrantTimer of the corresponding HARQ process is not running: 3> Consider the NDI bit of the corresponding HARQ process as toggled; 3> Deliver the configured uplink grant and associated HARQ information to the HARQ entity.

[0181] In the following, some embodiments are described where the first UL transmission is a CG transmission and the second UL transmission is a DG transmission, although this is for illustrative purposes only and the principles and concepts are applicable to other types of transmissions.

[0182] In some embodiments, the first parameter set may be associated with a first SRS resource set, and the second parameter set may be associated with a second SRS resource set. For example, the first UL transmission may be performed by the first TRP 141 or via the first panel 131, and the second UL transmission may be performed by the second TRP 142 or via the second panel 132. Such an embodiment may also be referred to as Scenario 1 or Option 1.

[0183] An example of the first UL transmission is a CG transmission, and an example of the second UL transmission is a DG transmission. FIG. 6 illustrates an exemplary scenario 600. As illustrated in FIG. 6, a DG transmission starting at t+T overlaps with a CG transmission starting at t+T. In the exemplary scenario 600, the CG transmission is associated with the first TRP 141 or through the first panel 131, while the DG transmission is associated with the second TRP 142 or through the second panel 132. The panels of the terminal device 110 can perform simultaneous transmissions, thereby supporting STxMP for CG and DG transmissions. In option 1, the capability report may indicate whether the terminal device 110 supports simultaneous single-TRP CG and single-TRP DG transmissions.

[0184] The network device 110 may explicitly configure STxMP for CG and DG transmissions. The terminal device 110 may expect the CG and DG transmissions to be associated with different SRS resource sets. In some embodiments, the association of the CG and DG transmissions with the SRS resource sets may be indicated or predefined. For example, the CG transmission may be associated with a first SRS resource set, and the DG transmission may be associated with a second SRS resource set.

[0185] In some embodiments, for Type 1 CG, the parameters srs-ResourceIndicator and precodingAndNumberOfLayers in the RRC configuration (eg, as described with respect to flow 300) may be associated with a first SRS resource set.

[0186] In some embodiments, for Type 2 CG, the "SRI" field and the "TPMI" field in the DCI for activation may be associated with the first SRS resource set.

[0187] In some embodiments, M-DCI may be employed. In such embodiments, the CG and DG transmissions may each be associated with a different TAG and / or TA. Alternatively or additionally, the CG and DG transmissions may each be associated with a CORESET having a different CORESETPoolIndex value.

[0188] For a DG transmission starting at t+T, the values ​​of one or more fields in the UL-DCI scheduling this DG transmission may be set to avoid collision with a CG transmission. For example, terminal device 110 expects the coresetPoolIndex value of the CORESET receiving the DCI for this DG transmission to be different from the coresetPoolIndex value of the CORESET associated with the CG transmission. For the "SRI" field in the UL-DCI, terminal device 110 expects a value indicating SRS resources in a second SRS resource set that is different from the first SRS resource set configured or indicated for the CG transmission. Correspondingly, the "TPMI" field may be associated with the second SRS resource set.

[0189] In such an embodiment, an M-DCI is employed. Correspondingly, the first BM-DCI and the second BM-DCI can be indicated via a CORESET associated with two different CORESETPoolIndex values, respectively. Each of the first and second SRS resource sets may be configured with the instruction "followUnifiedTCIState" indicating the TCI state to follow. The first SRS resource set may follow the TCI state update provided by the first BM-DCI. Furthermore, the first SRS resource set and the first BM-DCI are associated with the same value of CORESETPoolIndex. The second SRS resource set may follow the TCI state update provided by the second BM-DCI. Furthermore, the second SRS resource set and the second BM-DCI are associated with the same value of CORESETPoolIndex.

[0190] In some embodiments, an S-DCI may be employed. In such embodiments, for a DG transmission starting at t+T, the values ​​of one or more fields in the UL-DCI that schedules this DG transmission may be set to avoid collision with a CG transmission. For example, the "SRI" and "TPMI" fields may be associated with a second SRS resource set.

[0191] For BM-DCI where two TCI states are mapped to a TCI field, each SRS resource set is configured with the instruction "followUnifiedTCIState" to indicate the TCI state to follow. The first SRS resource set may follow the TCI state update provided by the first TCI state mapped to the TCI field. The second SRS resource set may follow the TCI state update provided by the second TCI state mapped to the TCI field. Furthermore, the mapping between SRS resource sets and TCI states can also be indicated.

[0192] As shown in Figure 6, the time indexes t, t+T, t+2+T only indicate the start time of each transmission, and the duration of the transmission can be further configured or indicated, where T may be the periodicity of the CG PUSCH.

[0193] In conventional solutions, if two SRS resource sets are configured but only one set of power control parameters (e.g., pathlossReferenceIndex, p0-PUSCH-Alpha, powerControlLoopToUse) is provided for one of the CG PUSCHs, it is assumed to be a single TRP (S-TRP) transmission associated with only the first SRS resource set.

[0194] In contrast, in some embodiments of the present disclosure, DG and CG transmissions may be associated with different SRS resource sets and transmitted simultaneously, so there may be one set of power control parameters configured in RRC for CG transmissions and another set of power control parameters provided only for DG transmissions.

[0195] In one example, if a UE is provided with STxMP-CGandDG, for a PUSCH transmission with a configured grant of type 1, when two SRS resource sets are configured in srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2, if configuredGrantConfig contains only one of pathlossReferenceIndex, p0-PUSCH-Alpha, powerControlLoopToUse, srs-ResourceIndicator, and precodingAndNumberOfLayers (applicable when higher layer parameter use in SRS-ResourceSet is set to "codebook"), the PUSCH transmission or repetition is associated only with the SRS resource set indicated by SRS_resource_set_index.

[0196] In one example, if the UE is provisioned with STxMP-CGandDG, if the UE is provided with two SRS resource sets in srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2, usage is set to "codebook" or "nonCodebook", and the UE is not provisioned with p0-PUSCH-Alpha2 and powerControlLoopToUse2, then in a Type 1 PUSCH retransmission of a configured grant or a Type 2 PUSCH activation or retransmission of a configured grant scheduled by a DCI format including an SRS resource set indicator field, the UE expects the PUSCH transmission or repetition to be associated only with the SRS resource set indicated in the SRS resource set indicator field.

[0197] Scenario 1 was described above. Alternatively, in some embodiments, the first parameter set may be associated with the first SRS resource set. Thus, during a period in which the first UL transmission overlaps with the second UL transmission, the second parameter set is associated with the second SRS resource set. During a period in which the first UL transmission does not overlap with the second UL transmission, the second parameter set is associated with at least one of the first and second SRS resource sets. In other words, the first UL transmission is associated with the first TRP 141 or the first panel 131, and the second UL transmission is configured with an S-TRP or an MTRP STxMP with dynamic switching capability to a single panel. Such an embodiment may also be referred to as Scenario 2 or Option 2.

[0198] Still taking CG transmission as an example of the first UL transmission and DG transmission as an example of the second UL transmission. Figure 7 shows an exemplary scenario 700. As shown in Figure 7, DG transmission starting at t+T overlaps with CG transmission starting at t+T. In the exemplary scenario 700, the CG transmission is associated with the first TRP 141 or via the first panel 131, and the DG transmission is configured with an MTRP STxMP (e.g., SFN STxMP, SDM STxMP) with dynamic switching capability to an S-TRP (or single panel). In this option 2, the capability report from the terminal device 110 to the network device 120 may indicate whether the terminal device 110 supports simultaneous transmission of a single-TRP CG and a multi-TRP or STxMP DG.

[0199] To support STxMP for CG and DG transmissions, if a CG PUSCH (starting at t+T) is transmitted to the first TRP 141 or via the first panel 13, a DG PUSCH (starting at t+T) to the first TRP 141 or via the first panel 131 should be avoided, for example by switching to an S-TRP transmission.

[0200] In such an embodiment, a CG transmission may be associated with one SRS resource set and a DG transmission may be associated with two SRS resource sets. This association may be indicated or predefined, for example, the CG transmission may be associated with the first SRS resource set. Compared to option 1 above, this provides increased flexibility, as the DG transmission is not tied to one SRS resource set.

[0201] In some embodiments, for Type 1 CG, the parameters srs-ResourceIndicator and precodingAndNumberOfLayers in the RRC configuration (eg, as described with respect to flow 300) may be associated with a first SRS resource set.

[0202] In some embodiments, for Type 2 CG, the "SRI" field and the "TPMI" field in the DCI for activation may be associated with the first SRS resource set.

[0203] In some embodiments, M-DCI may be employed. In such embodiments, the CG transmission may be associated with the first TAG or the first TA. Alternatively or additionally, the CG transmission may be associated with the first CORESETPoolIndex value.

[0204] For a DG transmission starting at t+T, the values ​​of one or more fields in the DCI format scheduling this DG transmission are set to avoid collision with a CG transmission. For example, for the "SRI" field in the DCI format, the terminal device 110 may expect a value indicating SRS resources in a second SRS resource set that is different from the first SRS resource set configured or indicated for the CG transmission. The "TPMI" field may be associated with the second SRS resource set. Furthermore, the terminal device 110 may expect the coresetPoolIndex value of the CORESET that received the DCI for this DG transmission to be different from the coresetPoolIndex value of the CORESET associated with the CG transmission.

[0205] In some embodiments, S-DCI may be employed, in which for a DG transmission starting at t+T, the values ​​of one or more fields in the DCI format that schedules this DG transmission may be set to avoid collision with CG transmissions.

[0206] For the "SRS Resource Set Indicator" field, terminal device 110 may expect a value indicating an S-TRP transmission, e.g., a value indicating a second SRS resource set different from the first SRS resource set configured or indicated for CG transmission. For example, if CG transmission is associated with SRS resource set 2, terminal device 110 may expect the value "00." If CG transmission is associated with SRS resource set 1, terminal device 110 may expect the value "01." Furthermore, terminal device 110 does not expect the values ​​"10" and "11," which imply that STxMP is enabled for DG transmission.

[0207] The "SRI 1" and "TPMI 1" fields may be associated with an SRS resource set (e.g., a second SRS resource set) indicated via the "SRS Resource Set Indicator" field. The "SRI 2" and "TPMI 2" fields may be reserved.

[0208] Alternatively, in some embodiments, during a period in which the first UL transmission overlaps with the second UL transmission, the second UL transmission may not be expected, or in other words, the second UL transmission may be dropped during a period in which the first UL transmission overlaps with the second UL transmission.

[0209] Continuing with the above example, if terminal device 110 is configured with SFN STxMP for DG transmissions, terminal device 110 may drop transmissions that collide with CG transmissions in the spatial domain (i.e., via the same panel of terminal device 110). In this case, the "SRS Resource Set Indicator" field may have any value, and the "SRI 2" and "TPMI 2" fields may also be associated with the SRS resource set indicated via the "SRS Resource Set Indicator" field.

[0210] Alternatively, in some embodiments, the first parameter set is associated with a first SRS resource set and a second SRS resource set, and the first UL transmission may be configured in a time division multiplexing (TDM) manner. During a period in which the first UL transmission overlaps with the second UL transmission, the first and second parameter sets may be associated with different SRS resource sets. Such an embodiment may be referred to as Scenario 3 or Option 3.

[0211] Still taking CG transmission as an example of the first UL transmission and DG transmission as an example of the second UL transmission. FIG. 8 illustrates an exemplary scenario 800. As shown in FIG. 8, DG transmission starting at t+T overlaps with CG transmission starting at t+T and CG transmission starting at t+T+τ. In exemplary scenario 800, CG transmission is configured with MTRP (e.g., CG-based PUSCH TDM repetition, SFN STxMP, SDM STxMP), and DG transmission is configured with MTRP STxMP with dynamic switching to STRP (e.g., SFN STxMP, SDM STxMP). In this option 3, the capability report from terminal device 110 to network device 120 may indicate whether terminal device 110 supports simultaneous transmission of multi-TRP or STxMP CG and multi-TRP or STxMP DG.

[0212] To support STxMP for CG and DG transmissions, if CG PUSCHs starting at t+T and t+T+τ are transmitted to one TRP, DG transmission to this TRP should be avoided, which can be achieved, for example, by switching to S-TRP transmission to another TRP.

[0213] In such an embodiment, both CG and DG transmissions may be associated with two SRS resource sets, which provides increased flexibility compared to Option 1 and Option 2, since CG transmissions are not tied to one SRS resource set.

[0214] In some embodiments, for Type 1 CG, the RRC configuration (e.g., as described with respect to flow 300) may be associated with a first SRS resource set and a second SRS resource set, which are associated with a first parameter set and a second parameter set, respectively.

[0215] In some embodiments, for a Type 2 CG, the "SRS Resource Set Indicator" field (if present) in the DCI for activation may indicate the first SRS resource set and the second SRS resource set. Alternatively, the SRS resource sets may be determined based on the coresetPoolIndex value of the CORESET receiving the activation DCI for this CG. The "SRI" and "TPMI" fields may be associated with the first SRS resource set, and the "SRI2" and "TPMI2" fields may be associated with the second SRS resource set.

[0216] If the CG transmission is configured in an SFN or SDM manner, terminal device 110 may not expect a DG transmission to be scheduled within the period of the CG transmission starting at t + T. In some embodiments, if the CG transmission is configured with a lower priority than the DG transmission, terminal device 110 may not expect to perform the CG transmission starting at t + T.

[0217] When CG transmission is configured in a TDM manner, DG transmission may be switched to S-TRP transmission as in Option 2. For example, as shown in Figure 8, the repetition of the TDM scheme is 2, and the offset between the first and second transmission opportunities is τ. DG transmission starting at t+T may be performed using the second panel 132, and DG transmission starting at t+T+τ may be performed using the first panel 131.

[0218] In some embodiments, M-DCI may be employed. For a DG transmission starting at t+T, the values ​​of one or more fields in the DCI scheduling this DG transmission are set to avoid collision with a CG transmission. For example, for the "SRI" field in the DCI, terminal device 110 may expect a value indicating SRS resources in a second SRS resource set that is different from the first SRS resource set configured or indicated for the CG transmission. The "TPMI" field may be associated with the second SRS resource set. Furthermore, terminal device 110 may expect the coresetPoolIndex value of the CORESET that received the DCI for this DG transmission to be different from the coresetPoolIndex value of the CORESET associated with the CG transmission.

[0219] In some embodiments, S-DCI may be employed, in which for a DG transmission starting at t+T, the values ​​of one or more fields in the DCI that schedules this DG transmission may be set to avoid collision with CG transmissions.

[0220] For the "SRS Resource Set Indicator" field, terminal device 110 may expect a value indicative of an S-TRP transmission (e.g., a value indicative of a second SRS resource set different from a first SRS resource set configured or indicated for CG transmission). For example, terminal device 110 may expect a value of "00" if the CG transmission is associated with SRS resource set 2. Terminal device 110 may expect a value of "01" if the CG transmission is associated with SRS resource set 1. Furthermore, terminal device 110 does not expect values ​​of "10" and "11."

[0221] The "SRI 1" and "TPMI 1" fields may be associated with an SRS resource set (e.g., a second SRS resource set) indicated via the "SRS Resource Set Indicator" field. The "SRI 2" and "TPMI 2" fields may be reserved.

[0222] Alternatively, in some embodiments, when terminal device 110 is configured with SFNSTxMP for DG transmissions, terminal device 110 may drop transmissions that collide with CG transmissions in the spatial domain (i.e., via the same panel of terminal device 110). In this case, the "SRS Resource Set Indicator" field may have any value, and the "SRI 2" and "TPMI 2" fields may also be associated with an SRS resource set indicated via the "SRS Resource Set Indicator" field.

[0223] Some embodiments have been described above. Some examples will be described below.

[0224] In one example, if a UE is not provisioned with priolowdg-HighCG or prioHighDG-LowCG, or if the UE is provisioned with prioLowDG-HighCG or prioHighDG-LowCG, or if the UE is not provisioned with STxMP-CGandDG and two PUSCHs have the same priority index, the UE is not expected to be scheduled by a PDCCH ending at symbol i to transmit a PUSCH that overlaps in time with a transmission opportunity on a given serving cell, and the end of symbol i does not precede the start of symbol j by at least N symbols, the UE is allowed to transmit a PUSCH with a configured grant that starts at symbol j on the same serving cell. The value of N symbols is determined according to the UE's processing capability, and N and the symbol period are based on the minimum of the subcarrier spacing corresponding to the PUSCH with a configured grant and the subcarrier spacing of the PDCCH scheduling the PUSCH.

[0225] In one example, for each serving cell and each configured uplink grant, if configured and activated, the MAC entity shall perform the following: 1> If the PUSCH period of the configured uplink grant does not overlap with the PUSCH period of an uplink grant received on a PDCCH associated with the same SRS resource set as the configured uplink grant and STxMP-CGandDG is configured for the serving cell: 1> If the PUSCH period of a configured uplink grant does not overlap with the PUSCH period of another configured uplink grant associated with the same SRS resource set as the configured uplink grant and STxMP-CGandCG is configured for the serving cell: 2> Set the HARQ process ID to the HARQ process ID associated with this PUSCH period; 2> If the configuredGrantTimer of the corresponding HARQ process is not running: 3> Consider the NDI bit of the corresponding HARQ process as toggled; 3> Deliver HARQ information associated with the configured uplink grant to the HARQ entity.

[0226] As mentioned above, the scenario described for STxMP for CG and DG transmissions is also applicable to STxMP for two CG transmissions and STxMP for two DG transmissions, thus providing a more general signaling STxMP-PUSCH.

[0227] In one example, for any HARQ process ID(s) in a given scheduling cell, the UE is not expected to transmit a PUSCH that overlaps in time with other PUSCHs unless the UE is provided with an STxMP-PUSCH.

[0228] In one example, if a UE is provided with an STxMP-PUSCH, for any HARQ process ID(s) in a given scheduling cell, the UE may transmit a PUSCH that overlaps in time with another PUSCH.

[0229] In one example, for any two HARQ process IDs in a given scheduling cell, if a UE is scheduled to start a first PUSCH transmission starting at symbol j by a PDCCH ending at symbol i in the scheduling cell, the UE is not expected to be scheduled to transmit a PUSCH starting earlier than the end of the first PUSCH by a PDCCH ending after symbol i in the scheduling cell, unless the UE is provided with an STxMP-PUSCH.

[0230] In one example, when a UE is provided with an STxMP-PUSCH, for any two HARQ process IDs in a given scheduling cell, if the UE is scheduled to start a first PUSCH transmission starting at symbol j by a PDCCH ending at symbol i on the scheduling cell, the UE may be scheduled to transmit a PUSCH starting earlier than the end of the first PUSCH by a PDCCH ending after symbol i on the scheduling cell.

[0231] The above-described embodiment can support simultaneous STxMP PUSCH transmissions, thus improving scheduling flexibility and reducing delays. Example processing for different TA cases

[0232] As mentioned above, in some cases, a UL transmission may be associated with two different TAs or TAGs, so when more than one TA or TAG exists, overlapping UL transmissions (e.g., CG and DG transmissions) must be handled.

[0233] 9, which illustrates a signaling flow 900 of processing in the case of different TAs according to some embodiments of the present disclosure. For convenience of explanation, the signaling flow 900 will be described with reference to FIG. 1, for example, using the terminal device 110 and the network device 120.

[0234] The network device 120 transmits (905) first configuration information for the first UL transmission to the terminal device 110. The first UL transmission is associated with the first TAG or the first TA.

[0235] The network device 120 transmits second configuration information for a second UL transmission to the terminal device 110 (910). The second UL transmission is associated with a second TAG or a second TA. The second uplink transmission does not overlap with the first uplink transmission in a first period. The first period is associated with a second period of the first UL transmission and a third period associated with a first difference between the first TAG and the second TAG or between the first TA and the second TA. In other words, the period during which the second UL transmission is not performed depends on the period of the first UL transmission and the difference between the two TAs.

[0236] The impact of the two TAs may be related to defining the overlap by considering the TA difference between the TA for the first UL transmission and the TA for the second UL transmission. For terminal devices that do not support STxMP for UL transmissions (e.g., PUSCH transmissions), the duration occupied by the first UL transmission (e.g., a high-priority CG transmission) should be added by at least one symbol period.

[0237] Still taking CG transmission as an example of the first UL transmission and DG transmission as an example of the second UL transmission. Figure 10A shows a schematic diagram of uplink transmission timing without considering the TA difference according to some embodiments of the present disclosure. As shown, a grant for DG transmission is received at symbol i. PUSCH processing capability is represented by N2. DG transmission starts at symbol j. Without considering the TA difference between CG and DG transmissions, DG transmission should not be performed within the duration 1001 during which a CG transmission opportunity occurs.

[0238] In some embodiments, to avoid overlap with the first UL transmission, the second UL transmission may be scheduled based at least in part on a third time period, a time point at which the second UL transmission receives a grant (e.g., symbol i), or a fourth time period from the time point at which the UL uplink transmission receives a grant to a further time point at which the second UL transmission is performed (e.g., symbol j).

[0239] FIG. 10B illustrates a schematic diagram of uplink transmission timing taking into account a TA difference according to some embodiments of the present disclosure. If a CG transmission is associated with a TAG with a larger TA value (or a TAG with an earlier DL reference timing), this means that the CG transmission opportunity may start earlier in time than the configured time from the perspective of the DG UL-DCI. On the other hand, if a CG transmission is associated with a TAG with a smaller TA value (or a TAG with a later DL reference timing), the end of the CG transmission opportunity may be delayed beyond the configured start time plus the duration of the CG transmission. Therefore, as shown in FIG. 10B, an extended duration 1002 including the CG transmission opportunity may be determined. Therefore, the DG transmission is not performed within the extended duration 1002.

[0240] To avoid overlap with CG transmissions, a DG transmission starting at symbol j needs to be replaced by a DG transmission starting at symbol j - (|TA2 - TA1| symbols). The maximum value of |TA2 - TA1| may be less than one symbol period. In this case, j - 1 may be used. To generalize further, j ± T can be considered as the start time of a DG transmission, where T is related to the TA difference of the two TAGs.

[0241] Alternatively or additionally, an equivalent effect can be achieved by extending the end of the CG transmission opportunity. Alternatively or additionally, an equivalent effect can be achieved by extending the PUSCH processing capability N2 (e.g., defining N2 ± T). In some other examples, this is equivalent to extending the UE PUSCH preparation procedure time Tproc.

[0242] In some embodiments, the first UL transmission may be associated with a first timing reference and the second UL transmission may be associated with a second timing reference, and the second UL transmission may be scheduled based at least in part on a second difference between the first and second timing references.

[0243] Continuing with the example of Figure 10B, two DL timing references may be allowed for 2-TA operation. As a result, symbol i and symbol j may correspond to DL and UL symbols with respect to different DL reference timings, potentially differing by T symbols. Such differences may also be resolved by further defining UL symbol j as UL symbol j±T, as discussed above.

[0244] Although the above embodiments have been described with respect to CG and DG transmissions, this is by way of example only and is not intended to be limiting. The principles and concepts described above are not limited to overlapping CG and DG transmissions, but are generally applicable to STxMP for UL transmissions.

[0245] In this way, overlaps caused by different TAs can be handled.

[0246] Some further examples are described below.

[0247] In one example, for any two HARQ process IDs in a given scheduling cell, if a UE is scheduled to start a first PUSCH transmission starting at symbol j by a PDCCH ending at symbol i on the scheduling cell, the UE is not expected to be scheduled to transmit a PUSCH starting more than T symbols after the end of the first PUSCH by a PDCCH ending after symbol i on the scheduling cell, unless the UE is provided with an STxMP-PUSCH.

[0248] In some other examples, the symbol j may be changed to j±T, where T relates to the TA difference between two TAGs in a cell, or the DL timing reference difference between two TAGs in a cell.

[0249] For example, if a UE is not provisioned with priolowdg-HighCG or prioHighDG-LowCG, or if the UE is provisioned with prioLowDG-HighCG or prioHighDG-LowCG and two PUSCHs have the same priority index, the UE is not expected to be scheduled by a PDCCH ending at symbol i to transmit a PUSCH that overlaps in time with a transmission opportunity on a given serving cell, and the end of symbol i does not precede the start of symbols j±T by at least N symbols, the UE is allowed to transmit a PUSCH with a configured grant that starts at symbols j±T on the same serving cell. The value N symbols is determined according to the UE processing capability as defined in Section 6.4, and N and the symbol period are based on the minimum of the subcarrier spacing corresponding to the PUSCH with a configured grant and the subcarrier spacing of the PDCCH scheduling the PUSCH.

[0250] In one example, if there is a transmission opportunity in which the UE is allowed to transmit a PUSCH with a configured grant with the same HARQ process in the same serving cell starting at symbol j±T after symbol i, and if the interval between the end of the PDCCH and the start of symbol j±T is less than N symbols, the UE is not expected to be scheduled by the PDCCH ending at symbol i to transmit a PUSCH for a given HARQ process in a given serving cell. The value N symbols is determined based on the UE's processing capability, and N and the symbol period are based on the minimum of the subcarrier spacing corresponding to the PUSCH with a configured grant and the subcarrier spacing of the PDCCH scheduling the PUSCH. Exemplary Methods and Apparatus

[0251] 11 illustrates a flowchart of a communication method 1100 implemented in a terminal device 110 according to some embodiments of the present disclosure. For ease of explanation, the method 1100 is described from the perspective of the terminal device 110 of FIG.

[0252] In block 1110, the terminal device 110 receives configuration information for uplink transmission associated with a first sounding reference signal (SRS) resource set and a second SRS resource set from the network device 120. The configuration information indicates a first parameter set and a second parameter set to be used for the uplink transmission, a first instruction indicating a simultaneous transmission scheme for the uplink transmission, and mapping information. The mapping information indicates at least one of a correspondence relationship between the first and second parameter sets and the first and second SRS resource sets or a combination of the number of layers associated with the first and second parameter sets.

[0253] At block 1120, terminal device 110 determines first and second parameter sets associated with the first and second SRS resource sets, respectively, based at least in part on the first indication and the mapping information.

[0254] At block 1130, terminal device 110 performs uplink transmission with network device 120 based on the first and second parameter sets.

[0255] In some exemplary embodiments, either the first or second parameter set includes at least one of: at least one parameter used for power control, an SRS resource indicator, precoding information, the number of layers, a control response set identifier, or a timing advance group (TAG) identifier.

[0256] In some example embodiments, the mapping information indicates the correspondence by one of: a first value indicating that the first parameter set is associated with the first SRS resource set and the second parameter set is disabled; a second value indicating that the first parameter set is associated with the second SRS resource set and the second parameter set is disabled; a third value indicating that the first parameter set is associated with the first SRS resource set and the second parameter set is associated with the second SRS resource set; or a fourth value indicating that the first parameter set is associated with the second SRS resource set and the second parameter set is associated with the first SRS resource set.

[0257] In some exemplary embodiments, the mapping information indicates the combination by one of: a fifth value indicating that the first parameter set is associated with the first number of layers and the second parameter set is associated with the second number of layers; a sixth value indicating that the first parameter set is associated with the second number of layers and the second parameter set is associated with the first number of layers; a seventh value indicating that both the first and second parameter sets are associated with the first number of layers; or an eighth value indicating that both the first and second parameter sets are associated with the second number of layers.

[0258] In some exemplary embodiments, the mapping information indicates the correspondence and combination by one of the following values: a ninth value indicating that a first parameter set is associated with a first SRS resource set and a first number of layers and a second parameter set is associated with a second SRS resource set and a second number of layers; a tenth value indicating that a first parameter set is associated with a first SRS resource set and a second number of layers and a second parameter set is associated with a second SRS resource set and a first number of layers; an eleventh value indicating that a first parameter set is associated with a second SRS resource set and a first number of layers and a second parameter set is associated with the first SRS resource set and a second number of layers; or a twelfth value indicating that a first parameter set is associated with a second SRS resource set and a second number of layers and a second parameter set is associated with the first SRS resource set and a first number of layers.

[0259] In some example embodiments, the mapping information is indicated by an SRS resource set indication.

[0260] In some exemplary embodiments, the combinations are shown individually with the correspondence or jointly with the correspondence.

[0261] In some exemplary embodiments, the combination of layer counts is indicated by at least one of the first layer count and the second layer count, the first layer count and the total layer count of the combination, or the first layer count and an indication of whether the second layer count is the same as or different from the first layer count.

[0262] In some exemplary embodiments, terminal device 110 further determines a first value of a first SRS resource indicator (SRI) in response to a first portion of a first predefined lookup table. Furthermore, terminal device 110 determines a second value of a second SRI in response to a second portion of the first predefined lookup table. The second portion may be the same as or different from the first portion and is determined based on the first value, the first indication, and the mapping information.

[0263] In some exemplary embodiments, terminal device 110 further determines a third value of a first transmit precoding matrix indicator (TPMI) in response to a first portion of a second predefined lookup table. Furthermore, terminal device 110 determines a fourth value of a second TPMI in response to a second portion of the second predefined lookup table. The second portion may be the same as or different from the first portion and is determined based on the third value, the first indication, and the mapping information.

[0264] In some exemplary embodiments, the first and second parameter sets are associated with a single configuration.

[0265] In some exemplary embodiments, the first parameter set is associated with a first configuration and the second parameter set is associated with a second configuration, and the configuration information further indicates the association between the first configuration and the second configuration.

[0266] In some exemplary embodiments, the simultaneous transmission scheme is a spatial division multiplexing (SDM) scheme or a single frequency network (SFN) scheme.

[0267] In some exemplary embodiments, the uplink transmission is one of a dynamic grant (DG) uplink transmission, a configured grant (CG) uplink transmission of a first type, or a CG uplink transmission of a second type.

[0268] 12 illustrates a flowchart of a communication method 1200 implemented in terminal device 110 according to some embodiments of the present disclosure. For ease of explanation, method 1200 is described from the perspective of terminal device 110 of FIG.

[0269] At block 1210, terminal device 110 receives configuration information from network device 120 indicating a first configuration for a first uplink transmission and a second configuration for a second uplink transmission. The first configuration indicates a first parameter set. The second configuration indicates a second parameter set determined at least in part based on the first parameter set. The second uplink transmission at least partially overlaps with the first uplink transmission during a period.

[0270] At block 1220, terminal device 110 simultaneously performs first and second uplink transmissions based on the first and second parameter sets during the time period.

[0271] In some exemplary embodiments, the first uplink transmission is a configured grant (CG) uplink transmission and the second uplink transmission is a dynamic grant (DG) uplink transmission.

[0272] In some exemplary embodiments, the first and second configurations are associated with different control resource sets (CORSETs) and / or different timing advance groups (TAGs).

[0273] In some exemplary embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set and the second parameter set is associated with a second SRS resource set.

[0274] In some exemplary embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set, the second parameter set is associated with a second SRS resource set during a period in which the first uplink transmission overlaps with a second uplink transmission, and the second parameter set is associated with at least one of the first and second SRS resource sets during a period in which the first uplink transmission does not overlap with the second uplink transmission.

[0275] In some exemplary embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set and a second SRS resource set. The first uplink transmission is configured in a simultaneous transmission manner. During a period in which the first uplink transmission overlaps with the second uplink transmission, the second uplink transmission is not expected.

[0276] In some exemplary embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set and a second SRS resource set. The first uplink transmission is configured in a time division multiplexed (TDM) manner. During a period in which the first uplink transmission overlaps with the second uplink transmission, the first and second parameter sets are associated with different SRS resource sets.

[0277] 13 illustrates a flowchart of a communication method 1300 implemented in a terminal device 110 according to some embodiments of the present disclosure. For ease of explanation, the method 1300 is described from the perspective of the terminal device 110 of FIG.

[0278] At block 1310, terminal device 110 receives first configuration information for a first uplink transmission from network device 120. The first uplink transmission is associated with a first timing advance group (TAG).

[0279] In block 1320, terminal device 110 receives, from network device 120, second configuration information for a second uplink transmission. The second uplink transmission is associated with a second TAG. The second uplink transmission does not overlap with the first uplink transmission in a first time period. The first time period is associated with a second time period of the first uplink transmission and a third time period associated with a first difference between the first TAG and the second TAG.

[0280] At block 1330, terminal device 110 performs first and second uplink transmissions with network device 120 based at least in part on the first and second configuration information, respectively.

[0281] In some exemplary embodiments, the second uplink transmission is scheduled based at least in part on the third time period, the time of receiving the grant for the second uplink transmission, or a fourth time period from the time of receiving the grant for the second uplink transmission to a further time at which the second uplink transmission is performed.

[0282] In some exemplary embodiments, the first uplink transmission is associated with a first timing reference, the second uplink transmission is associated with a second timing reference, and the second uplink transmission is scheduled based at least in part on a second difference between the first and second timing references.

[0283] 14 illustrates a flowchart of a communication method 1400 implemented in a network device 120 according to some embodiments of the present disclosure. For ease of explanation, the method 1400 will be described in terms of the network device 120 of FIG.

[0284] In block 1410, the network device 120 transmits configuration information for uplink transmission associated with a first sounding reference signal (SRS) resource set and a second SRS resource set to the terminal device 110. The configuration information indicates a first parameter set and a second parameter set to be used for the uplink transmission, a first instruction indicating a simultaneous transmission scheme for the uplink transmission, and mapping information. The mapping information indicates at least one of a correspondence relationship between the first and second parameter sets and the first and second SRS resource sets or a combination of the number of layers associated with the first and second parameter sets.

[0285] At block 1420 , the network device 120 receives the uplink transmission from the terminal device 110 .

[0286] In some exemplary embodiments, either the first or second parameter set includes at least one of: at least one parameter used for power control, an SRS resource indicator, precoding information, the number of layers, a control response set identifier, or a timing advance group (TAG) identifier.

[0287] In some example embodiments, the mapping information indicates the correspondence by one of: a first value indicating that the first parameter set is associated with the first SRS resource set and the second parameter set is disabled; a second value indicating that the first parameter set is associated with the second SRS resource set and the second parameter set is disabled; a third value indicating that the first parameter set is associated with the first SRS resource set and the second parameter set is associated with the second SRS resource set; or a fourth value indicating that the first parameter set is associated with the second SRS resource set and the second parameter set is associated with the first SRS resource set.

[0288] In some exemplary embodiments, the mapping information indicates the combination by one of: a fifth value indicating that the first parameter set is associated with the first number of layers and the second parameter set is associated with the second number of layers; a sixth value indicating that the first parameter set is associated with the second number of layers and the second parameter set is associated with the first number of layers; a seventh value indicating that both the first and second parameter sets are associated with the first number of layers; or an eighth value indicating that both the first and second parameter sets are associated with the second number of layers.

[0289] In some exemplary embodiments, the mapping information indicates the correspondence and combination by one of the following values: a ninth value indicating that a first parameter set is associated with a first SRS resource set and a first number of layers and a second parameter set is associated with a second SRS resource set and a second number of layers; a tenth value indicating that a first parameter set is associated with a first SRS resource set and a second number of layers and a second parameter set is associated with a second SRS resource set and a first number of layers; an eleventh value indicating that a first parameter set is associated with a second SRS resource set and a first number of layers and a second parameter set is associated with the first SRS resource set and a second number of layers; or a twelfth value indicating that a first parameter set is associated with a second SRS resource set and a second number of layers and a second parameter set is associated with the first SRS resource set and a first number of layers.

[0290] In some exemplary embodiments, the mapping information is indicated by an SRS resource set indication.

[0291] In some exemplary embodiments, the layer number combinations are indicated individually with a correspondence relationship or jointly with a correspondence relationship.

[0292] In some exemplary embodiments, the combination of layer counts is indicated by at least one of the first layer count and the second layer count, the first layer count and the total layer count of the combination, or the first layer count and an indication of whether the second layer count is the same as or different from the first layer count.

[0293] In some exemplary embodiments, the first and second parameter sets are associated with a single configuration.

[0294] In some exemplary embodiments, the first parameter set is associated with a first configuration, the second parameter set is associated with a second configuration, and the configuration information further indicates the association between the first configuration and the second configuration.

[0295] In some exemplary embodiments, the simultaneous transmission scheme is a spatial division multiplexing (SDM) scheme or a single frequency network (SFN) scheme.

[0296] In some exemplary embodiments, the uplink transmission is one of a dynamic grant (DG) uplink transmission, a configured grant (CG) uplink transmission of a first type, or a CG uplink transmission of a second type.

[0297] 15 illustrates a flowchart of a communication method 1500 implemented in a network device 120 according to some embodiments of the present disclosure. For ease of explanation, the method 1500 will be described in terms of the network device 120 of FIG.

[0298] At block 1510, the network device 120 transmits configuration information to the terminal device 110 indicating a first configuration for a first uplink transmission and a second configuration for a second uplink transmission. The first configuration indicates a first parameter set during a time period. The second configuration indicates a second parameter set determined at least in part based on the first parameter set. The second uplink transmission at least partially overlaps with the first uplink transmission during a time period.

[0299] At block 1520, the network device 120 simultaneously receives the first and second uplink transmissions.

[0300] In some exemplary embodiments, the first uplink transmission is a configured grant (CG) uplink transmission and the second uplink transmission is a dynamic grant (DG) uplink transmission.

[0301] In some exemplary embodiments, the first and second configurations are associated with different control resource sets (CORSETs) and / or different timing advance groups (TAGs).

[0302] In some exemplary embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set and the second parameter set is associated with a second SRS resource set.

[0303] In some exemplary embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set, the second parameter set is associated with a second SRS resource set during a period in which the first uplink transmission overlaps with a second uplink transmission, and the second parameter set is associated with at least one of the first and second SRS resource sets during a period in which the first uplink transmission does not overlap with the second uplink transmission.

[0304] In some exemplary embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set and a second SRS resource set. The first uplink transmission is configured in a simultaneous transmission manner. During a period in which the first uplink transmission overlaps with the second uplink transmission, the second uplink transmission is not expected.

[0305] In some exemplary embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set and a second SRS resource set. The first uplink transmission is configured in a time division multiplexed (TDM) manner. During a period in which the first uplink transmission overlaps with the second uplink transmission, the first and second parameter sets are associated with different SRS resource sets.

[0306] 16 illustrates a flowchart of a communication method 1600 implemented in a network device 120 according to some embodiments of the present disclosure. For ease of explanation, the method 1600 will be described in terms of the network device 120 of FIG.

[0307] At block 1610, the network device 120 transmits first configuration information for a first uplink transmission to the terminal device 110. The first uplink transmission is associated with a first timing advance group (TAG).

[0308] In block 1620, the network device 120 transmits second configuration information for a second uplink transmission to the terminal device 110. The second uplink transmission is associated with a second TAG. The second uplink transmission does not overlap with the first uplink transmission in a first time period. The first time period is associated with a second time period of the first uplink transmission and a third time period associated with a first difference between the first TAG and the second TAG.

[0309] At block 1630, network device 120 receives first and second uplink transmissions from terminal device 110 based at least in part on the first and second configuration information, respectively.

[0310] In some exemplary embodiments, the second uplink transmission is scheduled based at least in part on the third time period, the time of receiving the grant for the second uplink transmission, or a fourth time period from the time of receiving the grant for the second uplink transmission to a further time at which the second uplink transmission is performed.

[0311] In some exemplary embodiments, the first uplink transmission is associated with a first timing reference, the second uplink transmission is associated with a second timing reference, and the second uplink transmission is scheduled based at least in part on a second difference between the first and second timing references.

[0312] 17 is a simplified block diagram of an apparatus 1700 suitable for implementing embodiments of the present disclosure. Apparatus 1700 may be considered a further exemplary implementation of any of the apparatuses shown in FIG. 1. Thus, apparatus 1700 may be implemented in, or as, at least a portion of, terminal device 110 or network device 120.

[0313] As shown, the apparatus 1700 comprises a processor 1710, a memory 1720 coupled to the processor 1710, a suitable transmitter (TX) / receiver (RX) 1740 coupled to the processor 1710, and a communication interface coupled to the TX / RX 1740. The memory 1710 stores at least a portion of a program 1730. The TX / RX 1740 is for bidirectional communication. The TX / RX 1740 has at least one antenna to facilitate communication, although in practice the access nodes referred to herein may have multiple antennas. The communication interface may represent any interface required for communication with other network elements, such as an X2 / Xn interface for bidirectional communication between eNBs / gNBs, an S1 / NG interface for communication between a Mobility Management Entity (MME) / Access and Mobility Management Function (AMF) / SGW / UPF and an eNB / gNB, an Un interface for communication between an eNB / gNB and a relay node (RN), or a Uu interface for communication between an eNB / gNB and a terminal device.

[0314] The program 1730 is assumed to include program instructions that, when executed by an associated processor 1710, enable the device 1700 to operate in accordance with embodiments of the present disclosure, as described herein with reference to Figures 3-16. The embodiments herein may be implemented by computer software executable by the processor 1710 of the device 1700, by hardware, or by a combination of software and hardware. The processor 1710 may be configured to implement various embodiments of the present disclosure. Furthermore, the combination of the processor 1710 and the memory 1720 may form a processing means 1750 suitable for implementing various embodiments of the present disclosure.

[0315] Memory 1720 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 1720 is shown in device 1700, device 1700 may have multiple physically distinct memory modules. Processor 1710 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 1700 may have multiple processors, such as application-specific integrated circuit chips, time-slaved to a clock that synchronizes the main processor.

[0316] According to an embodiment of the present disclosure, a terminal device is provided, including a circuit configured to: receive, from a network device, configuration information for uplink transmission associated with a first sounding reference signal (SRS) resource set and a second SRS resource set, the configuration information indicating a first parameter set and a second parameter set to be used for the uplink transmission, a first instruction indicating a simultaneous transmission scheme for the uplink transmission, and mapping information, the mapping information indicating at least one of a correspondence relationship between the first and second parameter sets and the first and second SRS resource sets or a combination of the number of layers associated with the first and second parameter sets; determine, based at least in part on the first instruction and the mapping information, the first and second parameter sets associated with the first and second SRS resource sets, respectively; and perform uplink transmission with the network device based on the first and second parameter sets. According to an embodiment of the present disclosure, the circuit may be configured to perform any method implemented by the terminal device described above.

[0317] According to an embodiment of the present disclosure, a terminal device is provided, comprising a circuit configured to: receive, from a network device, configuration information indicating a first configuration of a first uplink transmission indicating a first parameter set; and a second configuration of a second uplink transmission at least partially overlapping with the first uplink transmission during a time period, the second configuration indicating the second parameter set being determined at least in part based on the first parameter set; and simultaneously perform, during the time period, the first and second uplink transmissions based on the first and second parameter sets. According to an embodiment of the present disclosure, the circuit may be configured to perform any of the methods implemented by the terminal device described above.

[0318] According to an embodiment of the present disclosure, a terminal device is provided, comprising a circuit configured to: receive, from a network device, first configuration information for a first uplink transmission, the first uplink transmission being associated with a first Timing Advance Group (TAG); receive, from the network device, second configuration information for a second uplink transmission, the second uplink transmission being associated with a second TAG, the second uplink transmission being non-overlapping with the first uplink transmission in a first time period, the first time period being associated with a second time period of the first uplink transmission and a third time period associated with a first difference between the first TAG and the second TAG; and perform the first and second uplink transmissions with the network device, respectively, based at least in part on the first and second configuration information. According to an embodiment of the present disclosure, the circuit may be configured to perform any method implemented by the terminal device described above.

[0319] According to an embodiment of the present disclosure, there is provided a network device including a circuit configured to: transmit, to a terminal device, configuration information for uplink transmissions associated with a first sounding reference signal (SRS) resource set and a second SRS resource set, the configuration information indicating a first parameter set and a second parameter set to be used for the uplink transmissions, a first indication indicating a simultaneous transmission scheme for the uplink transmissions, and mapping information, the mapping information indicating at least one of a correspondence between the first and second parameter sets and the first and second SRS resource sets or a combination of the number of layers associated with the first and second parameter sets; and receive the uplink transmission from the terminal device. According to an embodiment of the present disclosure, the circuit may be configured to perform any method implemented by the network device described above.

[0320] According to an embodiment of the present disclosure, there is provided a network device including a circuit configured to: transmit, to a terminal device, configuration information indicating a first configuration of a first uplink transmission during a time period, the first configuration indicating a first parameter set; and a second configuration of a second uplink transmission at least partially overlapping the first uplink transmission during a time period, the second configuration indicating the second parameter set determined at least in part based on the first parameter set; and simultaneously receive the first and second uplink transmissions. According to an embodiment of the present disclosure, the circuit may be configured to perform any of the methods implemented by the network device described above.

[0321] According to an embodiment of the present disclosure, a network device is provided, comprising a circuit configured to: transmit, to a terminal device, first configuration information for a first uplink transmission, the first uplink transmission being associated with a first Timing Advance Group (TAG); transmit, to the terminal device, second configuration information for a second uplink transmission, the second uplink transmission being associated with a second TAG, the second uplink transmission non-overlapping with the first uplink transmission in a first time period, the first time period being associated with a second time period of the first uplink transmission and a third time period associated with a first difference between the first TAG and the second TAG; and receive, from the terminal device, the first and second uplink transmissions, respectively, based at least in part on the first and second configuration information. According to an embodiment of the present disclosure, the circuit may be configured to perform any method implemented by the network device described above.

[0322] The term "circuit" as used herein may refer to a hardware circuit and / or a combination of a hardware circuit and software. For example, a circuit may be a combination of analog and / or digital hardware circuitry and software / firmware. As a further example, a circuit may be any portion of a hardware processor with software, where a hardware processor includes digital signal processor(s), software, and memory(s) that cooperate to enable a device, such as a terminal device or network device, to operate to perform various functions. In yet another example, a circuit may be a hardware circuit and / or processor, such as a microprocessor or portion of a microprocessor, that requires software / firmware for operation, but the software may not be present when not necessary for operation. As used herein, the term circuit also includes simply a hardware circuit or processor(s) or portion of a hardware circuit or processor(s) and its (or their) associated software and / or firmware implementation.

[0323] In summary, embodiments of the present disclosure provide the following aspects:

[0324] In one aspect, a terminal device is proposed, the terminal device including a processor, the processor being configured to cause the terminal device to perform the following operations: receive, from a network device, configuration information for uplink transmission associated with a first sounding reference signal (SRS) resource set and a second SRS resource set, the configuration information indicating a first parameter set and a second parameter set to be used for the uplink transmission, a first instruction indicating a simultaneous transmission scheme for the uplink transmission, and mapping information, the mapping information indicating at least one of a correspondence relationship between the first and second parameter sets and the first and second SRS resource sets or a combination of the number of layers associated with the first and second parameter sets; determine, based at least in part on the first instruction and the mapping information, the first and second parameter sets associated with the first and second SRS resource sets, respectively; and perform the uplink transmission with the network device based on the first and second parameter sets.

[0325] In some embodiments, either the first or second parameter set includes at least one of: at least one parameter used for power control, an SRS resource indicator, precoding information, the number of layers, a control response set identifier, or a timing advance group (TAG) identifier.

[0326] In some embodiments, the mapping information indicates the correspondence by one of: a first value indicating that the first parameter set is associated with the first SRS resource set and the second parameter set is disabled; a second value indicating that the first parameter set is associated with the second SRS resource set and the second parameter set is disabled; a third value indicating that the first parameter set is associated with the first SRS resource set and the second parameter set is associated with the second SRS resource set; or a fourth value indicating that the first parameter set is associated with the second SRS resource set and the second parameter set is associated with the first SRS resource set.

[0327] In some embodiments, the mapping information indicates the combination by one of: a fifth value indicating that the first parameter set is associated with the first number of layers and the second parameter set is associated with the second number of layers; a sixth value indicating that the first parameter set is associated with the second number of layers and the second parameter set is associated with the first number of layers; a seventh value indicating that both the first and second parameter sets are associated with the first number of layers; or an eighth value indicating that both the first and second parameter sets are associated with the second number of layers.

[0328] In some embodiments, the mapping information indicates the correspondence and combination by one of the following values: a ninth value indicating that a first parameter set is associated with a first SRS resource set and a first number of layers and a second parameter set is associated with a second SRS resource set and a second number of layers; a tenth value indicating that a first parameter set is associated with a first SRS resource set and a second number of layers and a second parameter set is associated with a second SRS resource set and a first number of layers; an eleventh value indicating that a first parameter set is associated with a second SRS resource set and a first number of layers and a second parameter set is associated with the first SRS resource set and a second number of layers; or a twelfth value indicating that a first parameter set is associated with a second SRS resource set and a second number of layers and a second parameter set is associated with the first SRS resource set and a first number of layers.

[0329] In some embodiments, the mapping information is indicated by an SRS resource set indication.

[0330] In some embodiments, the combinations are indicated separately from the correspondence or jointly with the correspondence.

[0331] In some embodiments, the combination of layer counts is indicated by at least one of the first layer count and the second layer count, the first layer count and the total layer count of the combination, or the first layer count and an indication of whether the second layer count is the same as or different from the first layer count.

[0332] In some embodiments, the processor is further configured to cause the terminal device to determine a first value of a first SRS resource indicator (SRI) according to a first portion of a first predefined lookup table, and to determine a second value of a second SRI according to a second portion of the first predefined lookup table, wherein the second portion is the same as or different from the first portion and is determined based on the first value, the first instruction, and the mapping information.

[0333] In some embodiments, the processor is further configured to cause the terminal device to determine a third value of a first transmit precoding matrix indicator (TPMI) according to a first portion of a second predefined lookup table, and to determine a fourth value of the second TPMI according to a second portion of the second predefined lookup table, wherein the second portion is the same as or different from the first portion and is determined based on the third value, the first instruction, and the mapping information.

[0334] In some embodiments, the first and second parameter sets are associated with a single configuration.

[0335] In some embodiments, the first parameter set is associated with a first configuration and the second parameter set is associated with a second configuration, and the configuration information further indicates the association between the first configuration and the second configuration.

[0336] In some embodiments, the simultaneous transmission scheme is a spatial division multiplexing (SDM) scheme or a single frequency network (SFN) scheme.

[0337] In some embodiments, the uplink transmission is one of a dynamic grant (DG) uplink transmission, a configured grant (CG) uplink transmission of a first type, or a CG uplink transmission of a second type.

[0338] In one aspect, a terminal device is proposed that includes a processor, the processor being configured to cause the terminal device to: receive from a network device configuration information indicating a first configuration of a first uplink transmission that indicates a first parameter set; and a second configuration of a second uplink transmission that at least partially overlaps with the first uplink transmission during a period of time, the second configuration indicating the second parameter set being determined at least partially based on the first parameter set; and simultaneously perform the first and second uplink transmissions during the period of time based on the first and second parameter sets.

[0339] In some embodiments, the first uplink transmission is a configured grant (CG) uplink transmission and the second uplink transmission is a dynamic grant (DG) uplink transmission.

[0340] In some embodiments, the first and second configurations are associated with different control resource sets (CORSETs) and / or different timing advance groups (TAGs).

[0341] In some embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set and the second parameter set is associated with a second SRS resource set.

[0342] In some embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set, the second parameter set is associated with a second SRS resource set during a period when the first uplink transmission overlaps with the second uplink transmission, and the second parameter set is associated with at least one of the first and second SRS resource sets during a period when the first uplink transmission does not overlap with the second uplink transmission.

[0343] In some embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set and a second SRS resource set, the first uplink transmission is configured in a simultaneous transmission manner, and the second uplink transmission is not expected during a period in which the first uplink transmission overlaps with the second uplink transmission.

[0344] In some embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set and a second SRS resource set, the first uplink transmission is configured in a time division multiplexed (TDM) manner, and during a period when the first uplink transmission overlaps with the second uplink transmission, the first and second parameter sets are associated with different SRS resource sets.

[0345] In one aspect, a terminal device is proposed that includes a processor, and the processor is configured to cause the terminal device to: receive first configuration information for a first uplink transmission from a network device, the first uplink transmission being associated with a first Timing Advance Group (TAG); receive second configuration information for a second uplink transmission from the network device, the second uplink transmission being associated with a second TAG, the second uplink transmission not overlapping with the first uplink transmission in a first period, the first period being associated with a second period of the first uplink transmission and a third period associated with a first difference between the first TAG and the second TAG; and perform the first and second uplink transmissions with the network device, respectively, based at least in part on the first and second configuration information.

[0346] In some embodiments, the second uplink transmission is scheduled based at least in part on the third time period, the time of receiving the grant for the second uplink transmission, or a fourth time period from the time of receiving the grant for the second uplink transmission to a further time at which the second uplink transmission is performed.

[0347] In some embodiments, the first uplink transmission is associated with a first timing reference, the second uplink transmission is associated with a second timing reference, and the second uplink transmission is scheduled based at least in part on a second difference between the first timing reference and the second timing reference.

[0348] In one aspect, a network device is proposed, comprising a processor, and the processor is configured to cause the network device to: transmit, to a terminal device, configuration information for uplink transmission associated with a first sounding reference signal (SRS) resource set and a second SRS resource set, the configuration information indicating a first parameter set and a second parameter set to be used for the uplink transmission, a first instruction indicating a simultaneous transmission scheme for the uplink transmission, and mapping information, the mapping information indicating at least one of a correspondence relationship between the first and second parameter sets and the first and second SRS resource sets, or a combination of the number of layers associated with the first and second parameter sets; and receive the uplink transmission from the terminal device.

[0349] In some embodiments, either the first or second parameter set includes at least one of: at least one parameter used for power control, an SRS resource indicator, precoding information, the number of layers, a control response set identifier, or a timing advance group (TAG) identifier.

[0350] In some embodiments, the mapping information indicates the correspondence by one of: a first value indicating that the first parameter set is associated with the first SRS resource set and the second parameter set is disabled; a second value indicating that the first parameter set is associated with the second SRS resource set and the second parameter set is disabled; a third value indicating that the first parameter set is associated with the first SRS resource set and the second parameter set is associated with the second SRS resource set; or a fourth value indicating that the first parameter set is associated with the second SRS resource set and the second parameter set is associated with the first SRS resource set.

[0351] In some embodiments, the mapping information indicates the combination by one of: a fifth value indicating that the first parameter set is associated with the first number of layers and the second parameter set is associated with the second number of layers; a sixth value indicating that the first parameter set is associated with the second number of layers and the second parameter set is associated with the first number of layers; a seventh value indicating that both the first and second parameter sets are associated with the first number of layers; or an eighth value indicating that both the first and second parameter sets are associated with the second number of layers.

[0352] In some embodiments, the mapping information indicates the correspondence and combination by one of the following values: a ninth value indicating that a first parameter set is associated with a first SRS resource set and a first number of layers and a second parameter set is associated with a second SRS resource set and a second number of layers; a tenth value indicating that a first parameter set is associated with a first SRS resource set and a second number of layers and a second parameter set is associated with a second SRS resource set and a first number of layers; an eleventh value indicating that a first parameter set is associated with a second SRS resource set and a first number of layers and a second parameter set is associated with the first SRS resource set and a second number of layers; or a twelfth value indicating that a first parameter set is associated with a second SRS resource set and a second number of layers and a second parameter set is associated with the first SRS resource set and a first number of layers.

[0353] In some embodiments, the mapping information is indicated by an SRS resource set indication.

[0354] In some embodiments, the layer number combinations are indicated separately from the correspondence or jointly with the correspondence.

[0355] In some embodiments, the combination of layer counts is indicated by at least one of the first layer count and the second layer count, the first layer count and the total layer count of the combination, or the first layer count and an indication of whether the second layer count is the same as or different from the first layer count.

[0356] In some embodiments, the first and second parameter sets are associated with a single configuration.

[0357] In some embodiments, the first parameter set is associated with a first configuration and the second parameter set is associated with a second configuration, and the configuration information further indicates the association between the first configuration and the second configuration.

[0358] In some embodiments, the simultaneous transmission scheme is a spatial division multiplexing (SDM) scheme or a single frequency network (SFN) scheme.

[0359] In some embodiments, the uplink transmission is one of a dynamic grant (DG) uplink transmission, a configured grant (CG) uplink transmission of a first type, or a CG uplink transmission of a second type.

[0360] In one aspect, a network device is proposed that includes a processor, the processor being configured to cause the network device to: transmit to a terminal device configuration information indicating a first configuration of a first uplink transmission during a time period, the first configuration indicating a first parameter set; and a second configuration of a second uplink transmission that at least partially overlaps with the first uplink transmission during the time period, the second configuration indicating the second parameter set being determined at least in part based on the first parameter set; and simultaneously receive the first and second uplink transmissions.

[0361] In some embodiments, the first uplink transmission is a configured grant (CG) uplink transmission and the second uplink transmission is a dynamic grant (DG) uplink transmission.

[0362] In some embodiments, the first and second configurations are associated with different control resource sets (CORSETs) and / or different timing advance groups (TAGs).

[0363] In some embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set and the second parameter set is associated with a second SRS resource set.

[0364] In some embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set, the second parameter set is associated with a second SRS resource set during a period when the first uplink transmission overlaps with the second uplink transmission, and the second parameter set is associated with at least one of the first and second SRS resource sets during a period when the first uplink transmission does not overlap with the second uplink transmission.

[0365] In some embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set and a second SRS resource set, the first uplink transmission is configured in a simultaneous transmission manner, and the second uplink transmission is not expected during a period in which the first uplink transmission overlaps with the second uplink transmission.

[0366] In some embodiments, the first parameter set is associated with a first sounding reference signal (SRS) resource set and a second SRS resource set, the first uplink transmission is configured in a time division multiplexed (TDM) manner, and during a period when the first uplink transmission overlaps with the second uplink transmission, the first and second parameter sets are associated with different SRS resource sets.

[0367] In one aspect, a network device is proposed that includes a processor, the processor being configured to cause the network device to: transmit, to a terminal device, first configuration information for a first uplink transmission, the first uplink transmission being associated with a first Timing Advance Group (TAG); transmit, to the terminal device, second configuration information for a second uplink transmission, the second uplink transmission being associated with a second TAG, the second uplink transmission not overlapping with the first uplink transmission in a first period, the first period being associated with a second period of the first uplink transmission and a third period associated with a first difference between the first TAG and the second TAG; and receive, respectively, the first and second uplink transmissions from the terminal device based at least in part on the first and second configuration information.

[0368] In some embodiments, the second uplink transmission is scheduled based at least in part on the third time period, the time of receiving the grant for the second uplink transmission, or a fourth time period from the time of receiving the grant for the second uplink transmission to a further time at which the second uplink transmission is performed.

[0369] In some embodiments, the first uplink transmission is associated with a first timing reference, the second uplink transmission is associated with a second timing reference, and the second uplink transmission is scheduled based at least in part on a second difference between the first timing reference and the second timing reference.

[0370] In one aspect, a terminal device comprises at least one processor and at least one memory coupled to the at least one processor and having instructions stored therein, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the terminal device described above.

[0371] In one aspect, a network device comprises at least one processor and at least one memory coupled to the at least one processor and having instructions stored thereon, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the network device described above.

[0372] In one aspect, a computer-readable medium has stored thereon instructions that, when executed on at least one processor, cause the at least one processor to perform the terminal device-implemented method described above.

[0373] In one aspect, a computer-readable medium has stored thereon instructions that, when executed on at least one processor, cause the at least one processor to perform a method implemented by the network device described above.

[0374] In one aspect, a computer program includes instructions that, when executed on at least one processor, cause the at least one processor to perform the terminal device-implemented method described above.

[0375] In one aspect, a computer program comprises instructions that, when executed on at least one processor, cause the at least one processor to perform the method implemented by the network device described above.

[0376] In general, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described using block diagrams, flowcharts, or some other pictorial representations, it should be understood that the blocks, devices, systems, techniques, or methods described herein may be implemented in, by way of non-limiting example, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller, or other computing device, or some combination thereof.

[0377] 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 (e.g., computer-executable instructions included in program modules) that execute on a target real or virtual processor device to perform the processes or methods described above with reference to FIGS. 1-17. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or split among program modules as desired in various embodiments. The machine-executable instructions for the program modules may be executed in local or distributed devices. In a distributed device, the program modules may be located in both local and remote storage media.

[0378] Program code for implementing 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 apparatus, so that when executed by the processor or controller, the program code performs the functions / acts specified in the flowcharts and / or block diagrams. The program code may be executed entirely on a machine, partially on a machine, as a stand-alone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0379] The program code may be embodied in a machine-readable medium, which may be any tangible medium that can contain or store a program for use by or in connection 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 includes, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. More specific examples of machine-readable storage media 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 CD-ROM (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0380] Additionally, while operations are depicted in a particular order, this should not be understood as requiring such operations to be performed in the particular order shown, or sequentially, or that all of the operations depicted be performed, to achieve desirable results. In certain situations, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above description, these should not be construed as limiting the scope of the disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

[0381] Although the present disclosure has been described in language specific to structural features and / or methodological operations, it is to be understood that the present disclosure, as defined in the appended claims, is not necessarily limited to the specific features or operations described above. Rather, the specific features and operations described above are disclosed as example forms of implementing the claims.

Claims

1. A means for receiving from a network device the first setting for the first uplink transmission and setting information for simultaneous uplink transmission of the first uplink transmission and the second uplink transmission. The system comprises means for performing the first and second uplink transmissions, The first uplink transmission and the second uplink transmission overlap at least partially in the time domain. The first setting includes a first set of parameters used for the first uplink transmission, The second uplink transmission is associated with the first parameter set. Terminal device.

2. The terminal device according to claim 1, wherein the setting information is used for simultaneous uplink transmission of a multi-panel, the Dynamic Grant (DG) in the Downlink Control Information (DCI) is used for the first uplink transmission, the Configured Grant (CG) is used for the second uplink transmission, the first parameter set is an SRS resource set, and the first setting is srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2.

3. The first setting and the reception of the setting information include the first setting and the second setting of the second uplink transmission and the reception of the setting information, If the second setting does not include a second parameter set used for the second uplink transmission, the second uplink transmission is associated with the first parameter set. The terminal device according to claim 1.

4. The configuration information is used for simultaneous uplink transmission of a multi-panel, the Dynamic Grant (DG) in the Downlink Control Information (DCI) is used for the first uplink transmission, the Configured Grant (CG) is used for the second uplink transmission, the first parameter set is an SRS resource set, the first setting is srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2, the second parameter set includes srs-ResourceIndicator2 or precodingAndNumberOfLayers2, and the second setting is configuredGrantConfig or rrc-ConfiguredUplinkGrant. The terminal device according to claim 3.

5. Receiving from the network device the first setting for the first uplink transmission, and setting information for simultaneous uplink transmission of the first uplink transmission and the second uplink transmission, and This includes performing the first and second uplink transmissions, The first uplink transmission and the second uplink transmission overlap at least partially in the time domain. The first setting includes a first set of parameters used for the first uplink transmission, The second uplink transmission is associated with the first parameter set. A method performed using a terminal device.

6. The aforementioned configuration information is used for simultaneous uplink transmission of the multi-panel; the Dynamic Grant (DG) in the Downlink Control Information (DCI) is used for the first uplink transmission; the Configured Grant (CG) is used for the second uplink transmission; the first parameter set is the SRS resource set; and the first setting is srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2. The method according to claim 5.

7. The first setting and the reception of the setting information include the first setting and the second setting of the second uplink transmission and the reception of the setting information, If the second setting does not include a second parameter set used for the second uplink transmission, the second uplink transmission is associated with the first parameter set. The method according to claim 5.

8. The configuration information is used for simultaneous uplink transmission of a multi-panel, the Dynamic Grant (DG) in the Downlink Control Information (DCI) is used for the first uplink transmission, the Configured Grant (CG) is used for the second uplink transmission, the first parameter set is an SRS resource set, the first setting is srs-ResourceSetToAddModList or srs-ResourceSetToAddModListDCI-0-2, the second parameter set includes srs-ResourceIndicator2 or precodingAndNumberOfLayers2, and the second setting is configuredGrantConfig or rrc-ConfiguredUplinkGrant. The method according to claim 7.

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