Terminal, wireless communication method, base station and system

Abstract

A terminal according to one embodiment of the present disclosure includes: a reception unit that receives information relating to a transmission scheme for an uplink shared channel (PUSCH) transmitted using at least one of a plurality of beams, panels, and transmission points, and downlink control information including information indicating the connection between an uplink phase tracking reference signal (PTRS) and demodulation reference signal (DMRS) for the PUSCH; and a control unit that determines an association between the PTRS port and the DMRS port, on the basis of the transmission scheme applied to the PUSCH, the downlink control information, and the number of PTRS ports being applied.

Description

Terminal, wireless communication method and base station

[0001] The present disclosure relates to a terminal, a wireless communication method, and a base station in a next-generation mobile communication system.

[0002] Long Term Evolution (LTE) has been specified for the Universal Mobile Telecommunications System (UMTS) network with the aim of achieving higher data rates and lower latency (Non-Patent Document 1). Also, LTE-Advanced (3GPP Rel. 10-14) has been specified with the aim of achieving higher capacity and more advanced features than LTE (Third Generation Partnership Project (3GPP (registered trademark)) Release (Rel.) 8, 9).

[0003] Successor systems to LTE (e.g., 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 or later, etc.) are also being considered.

[0004] 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010

[0005] In future wireless communication systems (e.g., Rel. 18 NR and later), a UE will be able to use one of multiple panels (or multiple beams) for uplink (UL) transmission. To improve UL throughput / reliability, simultaneous UL transmission using multiple panels (e.g., simultaneous multi-panel UL transmission (SiMPUL)) is being considered.

[0006] When multi-panel simultaneous UL transmission is supported, the UE transmits UL from two panels simultaneously, but there is little research on how to control UL transmission for more than one panel / TRP.

[0007] Therefore, one of the objectives of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately control transmission even when simultaneous transmission using multiple panels is supported.

[0008] A terminal according to one aspect of the present disclosure includes a receiving unit that receives information regarding a transmission method of an uplink shared channel (PUSCH) transmitted using at least one of a plurality of beams, panels, and transmission / reception points, and downlink control information including information indicating an association between an uplink phase tracking reference signal (PTRS) and a demodulation reference signal (DMRS) for the PUSCH, and a control unit that determines an association between a port of the PTRS and a port of the DMRS based on the transmission method applied to the PUSCH, the downlink control information, and the number of ports of the applied PTRS.

[0009] According to one aspect of the present disclosure, even when simultaneous transmission using multiple panels is supported, transmission control can be performed appropriately.

[0010] Figures 1A and 1B are diagrams illustrating an example of UL transmission for a single panel. Figures 2A to 2C are diagrams illustrating examples of methods 1 to 3 for simultaneous UL transmission using multiple panels. Figures 3A to 3C are diagrams illustrating an example of a PUSCH transmission method. Figures 4A to 4C are diagrams illustrating another example of a PUSCH transmission method. Figures 5A and 5B are diagrams illustrating an example of a PTRS-DMRS association field in Rel. 16. Figure 6 is a diagram illustrating an example of DMRS port-PUSCH antenna port-PTRS port association (or association candidates). Figure 7 is a diagram illustrating an example of a PTRS-DMRS association field in Rel. 17. Figures 8A and 8B are diagrams illustrating another example of a PTRS-DMRS association field in Rel. 17. Figure 9 is a diagram illustrating an example of PUSCH transmission using the FDM-A scheme according to the first embodiment. FIG. 10 is a diagram illustrating an example of a PTRS-DMRS association field and an association between a PTRS port and a DMRS port according to the first embodiment. FIG. 11 is a diagram illustrating another example of a PTRS-DMRS association field and an association between a PTRS port and a DMRS port according to the first embodiment. FIG. 12 is a diagram illustrating another example of a PTRS-DMRS association field and an association between a PTRS port and a DMRS port according to the first embodiment. FIG. 13 is a diagram illustrating another example of a PTRS-DMRS association field and an association between a PTRS port and a DMRS port according to the first embodiment. FIG. 14 is a diagram illustrating an example of PUSCH transmission using the FDM-B scheme according to the second embodiment. FIG. 15 is a diagram illustrating an example of a PTRS-DMRS association field and an association between a PTRS port and a DMRS port according to the second embodiment. FIG. 16 is a diagram illustrating another example of a PTRS-DMRS association field and an association between a PTRS port and a DMRS port according to the second embodiment. Fig. 17 is a diagram showing an example of PUSCH transmission using SDM / SDM repetition according to the third embodiment. Fig. 18 is a diagram showing an example of a PTRS-DMRS association field according to the third embodiment. Fig. 19 is a diagram showing an example of a PTRS-DMRS association field and an association between a PTRS port and a DMRS port according to the third embodiment.FIG. 20 is a diagram showing another example of a PTRS-DMRS association field according to the third embodiment. FIG. 21 is a diagram showing another example of a PTRS-DMRS association field and an association between a PTRS port and a DMRS port according to the third embodiment. FIG. 22 is a diagram showing another example of a PTRS-DMRS association field according to the third embodiment. FIG. 23 is a diagram showing another example of a PTRS-DMRS association field and an association between a PTRS port and a DMRS port according to the third embodiment. FIG. 24 is a diagram showing another example of a PTRS-DMRS association field according to the third embodiment. FIG. 25 is a diagram showing another example of a PTRS-DMRS association field and an association between a PTRS port and a DMRS port according to the third embodiment. FIG. 26 is a diagram showing another example of a PTRS-DMRS association field according to the third embodiment. FIG. 27 is a diagram showing another example of a PTRS-DMRS association field and an association between a PTRS port and a DMRS port according to the third embodiment. FIG. 28 is a diagram showing another example of a PTRS-DMRS association field according to the third embodiment. FIG. 29 is a diagram showing another example of a PTRS-DMRS association field and an association between a PTRS port and a DMRS port according to the third embodiment. FIG. 30 is a diagram showing another example of a PTRS-DMRS association field according to the third embodiment. FIGS. 31A and 31B are diagrams showing an example of the number of PTRS ports transmitted to a TRP. FIG. 32 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment. FIG. 33 is a diagram showing an example of a configuration of a base station according to an embodiment. FIG. 34 is a diagram showing an example of a configuration of a user terminal according to an embodiment. FIG. 35 is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment. FIG. 36 is a diagram showing an example of a vehicle according to an embodiment.

[0011] Future wireless communication systems (e.g., Rel. 18 NR and later) are expected to support simultaneous UL transmission (e.g., simultaneous multi-panel UL transmission (SiMPUL)) using multiple beams / panels / Transmission / Reception Points (TRPs) toward one or more transmission / reception points (TRPs).

[0012] For example, Rel. 18 considers simultaneous UL transmission using up to two TRPs per two panels. It also considers single-DCI-based and multi-DCI-based multi-TRP operation, and assumes that the total number of layers across all panels is up to four, and the total number of codewords across all panels is up to two. Of course, the number of TRPs, panels, layers, and codewords are not limited to these.

[0013] (Single Panel Transmission) The single panel UL transmission scheme or a candidate single panel UL transmission scheme may employ at least one of the following transmission schemes A and B (single panel UL transmission schemes A and B). In the present disclosure, a panel / UE panel may be interpreted as a UE capability value set (e.g., a UE capability value set) reported for each UE capability. In the present disclosure, different panels, different spatial relationships, different joint TCI states, different TPC parameters, different antenna ports, etc. may be interpreted as interchangeable terms.

[0014] Transmission Scheme A: Single Panel Single TRP UL Transmission In Rel. 15 and Rel. 16, a transmission scheme is used in which a UE transmits UL for one TRP from only one beam and panel at a time (FIG. 1A).

[0015] [Transmission Scheme B: Single Panel Multi-TRP UL Transmission] Rel. 17 considers UL transmission from only one beam and panel at a time and repeated transmission for multiple TRPs (Fig. 1B). In the example of Fig. 1B, the UE transmits a PUSCH from panel #1 to TRP #1 (switching beams and panels), and then transmits a PUSCH from panel #2 to TRP #2. The two TRPs are connected via an ideal backhaul.

[0016] (Multi-panel transmission) In Rel. 18 and later, in order to improve UL throughput / reliability, support for simultaneous UL transmission using multiple panels (e.g., simultaneous multi-panel UL transmission (SiMPUL)) for one or more TRPs is being considered. Also, a multi-panel UL transmission scheme is being considered for a specific UL channel (e.g., PUSCH / PUCCH).

[0017] For example, up to X (e.g., X = 2) and up to Y (e.g., Y = 2) panels may be supported for multi-panel UL transmission. In multi-panel UL transmission, if UL precoding indication for PUSCH is supported, a codebook of a legacy system (e.g., pre-Rel. 16) may be supported for simultaneous multi-panel transmission. Considering single DCI and multi-DCI-based multi-TRP operation, the number of layers may be up to x (e.g., x = 4) across all panels, and the number of codewords (CWs) may be up to y (e.g., y = 2) across all panels.

[0018] At least one of the following methods 1 to 3 (multi-panel UL transmission methods 1 to 3) is being considered as a multi-panel UL transmission method or a candidate multi-panel UL transmission method. Only one of transmission methods 1 to 3 may be supported. Multiple methods including at least one of transmission methods 1 to 3 may be supported, and one of the multiple transmission methods may be configured in the UE.

[0019] <Transmission Scheme 1: Coherent Multi-Panel UL Transmission> Multiple panels may be synchronized with each other. All layers are mapped to all panels. Multiple analog beams are directed. The SRS Resource Indicator (SRI) field may be extended. This scheme may use up to 4 layers for UL.

[0020] In the example of Figure 2A, the UE maps one codeword (CW) or one transport block (TB) to L layers (PUSCH (1, 2, ..., L)) and transmits the L layers from each of two panels. Panels #1 and #2 are coherent. Transmission scheme 1 can obtain diversity gain. The total number of layers in the two panels is 2L. If the maximum total number of layers is 4, the maximum number of layers in one panel is 2.

[0021] <Transmission Scheme 2: Non-coherent Multi-Panel UL Transmission of One Codeword (CW) or Transport Block (TB)> The multiple panels may not be synchronized. Different layers are mapped to one CW or TB for different panels and PUSCHs from multiple panels. A layer corresponding to one CW or TB may be mapped to multiple panels. This transmission scheme may use up to four layers or up to eight layers for the UL. If up to eight layers are supported, this transmission scheme may support one CW or TB using up to eight layers.

[0022] In the example of FIG. 2B, the UE maps 1 CW or 1 TB to k layers (PUSCH(1, 2, ..., k)) and L-k layers (PUSCH(k+1, k+2, ..., L)), transmits k layers from panel #1, and transmits L-k layers from panel #2. Transmission scheme 2 can obtain gains through multiplexing and diversity. The total number of layers in the two panels is L.

[0023] <Transmission Scheme 3: Non-coherent Multi-Panel UL Transmission of Two CWs or TBs> The multiple panels may not be synchronized. Different layers are mapped to different panels and two CWs or TBs for PUSCHs from the multiple panels. A layer corresponding to one CW or TB may be mapped to one panel. Layers corresponding to multiple CWs or TBs may be mapped to different panels. This transmission scheme may use up to four layers or up to eight layers for the UL. When up to eight layers are supported, this transmission scheme may support up to four layers per CW or TB.

[0024] In the example of FIG. 2C , the UE maps CW#1 or TB#1 of the 2CWs or 2TBs to k layers (PUSCH (1, 2, ..., k)), maps CW#2 or TB#2 to L-k layers (PUSCH (k+1, k+2, ..., L)), and transmits k layers from panel #1 and L-k layers from panel #2. Transmission scheme 3 can obtain gains through multiplexing and diversity. The total number of layers in the two panels is L.

[0025] In each of the above transmission schemes, the base station may configure or indicate panel-specific transmission for UL transmission using UL TCI or panel ID. UL TCI (UL TCI state) may be based on signaling similar to DL beam indication supported in Rel. 15. The panel ID may be implicitly or explicitly applied to transmission of at least one of the target RS resource or target RS resource set, PUCCH, SRS, and PRACH. When the panel ID is explicitly signaled, the panel ID may be configured in at least one of the target RS, target channel, and reference RS (e.g., DL RS resource configuration or spatial relationship information).

[0026] In one or more of the transmission methods / modes described above, multi-panel UL transmission (e.g., Simultaneous Transmission across Multiple Panels (STxMP)) for scheduling a PUSCH based on one DCI (single DCI) / scheduling a PUSCH based on multiple DCIs (multiple DCIs) is being considered.

[0027] In simultaneous multi-panel transmission (STxMP) in a single DCI-based multi-TRP system, the following schemes may be applied to UL transmissions (e.g., PUSCH): Space Division Multiplexing (SDM): Different layers / DMRS ports of one PUSCH are separately precoded and transmitted simultaneously from different UE beams / panels (see Figures 3A and 3B); SDM repetition: Two PUSCH transmission opportunities with different redundancy versions (RVs) of the same TB are transmitted simultaneously from two different UE beams / panels on the same time and frequency resources (see Figure 3C); and Frequency Division Multiplexing (FDM)-A: Different portions of the frequency domain resources of one PUSCH transmission opportunity (e.g., one PUSCH transmission occasion) are transmitted from different UE beams / panels (see Figure 4A). FDM-B scheme: Two PUSCH transmission opportunities with the same / different RVs of the same TB are transmitted from different UE beams / panels on non-overlapping frequency and time domain resources (see Figure 4B). SFN-based transmission scheme: All the same layers / DMRS ports of one PUSCH are transmitted simultaneously from two different UE beams / panels (see Figure 4C).

[0028] In the present disclosure, the terms "repeated transmission" and "transmission" may be interchangeable. Transmitting multiple TBs may mean transmitting the same TB multiple times or transmitting different TBs.

[0029] Space Division Multiplexing (SDM) The UE may assume that repeated PUSCH transmissions employing Space Division Multiplexing (SDM) are scheduled on the same time and frequency resources, i.e., the UE may transmit repeated PUSCH transmissions employing SDM on the same time and frequency resources when using coherent panels.

[0030] 3A is a diagram showing an example of repeated transmission using SDM in one CW, in which the time and frequency resources of layers #1-2 and #3-4 corresponding to the PUSCH / PUCCH are the same.

[0031] 3B is a diagram showing an example of repeated transmission using SDM in two CWs, in which CW#1 and CW#2 corresponding to PUSCH / PUCCH have the same time and frequency resources.

[0032] 3C is a diagram showing an example of repeated transmission using SDM, in which the time and frequency resources of PUSCH / PUCCH repetition #1 and repetition #2 are the same.

[0033] Note that PUSCH transmission to which SDM is applied (for example, PUSCH repeated transmission) may be configured such that at least a portion of the time and frequency resources overlap.

[0034] Frequency Division Multiplexing (FDM) The UE may assume that PUSCH / PUCCH repeat transmissions employing Frequency Division Multiplexing (FDM) are scheduled on the same time resources but different frequency resources, i.e., the UE may transmit PUSCH / PUCCH repeat transmissions employing FDM on the same time resources but different frequency resources when using coherent panels.

[0035] 4A is a diagram showing a first example of repeated transmission using FDM (FDM-A), in which one PUSCH / PUCCH repeated transmission is performed for one TB / UCI.

[0036] 4B is a diagram showing a second example of repeated transmission using FDM (FDM-B), in which PUSCH / PUCCH repeated transmission is performed twice per TB / UCI.

[0037] 4C is a diagram illustrating an example of repeated transmission using a single frequency network (SFN), in which one PUSCH / PUCCH is transmitted using a different beam / panel for one TB / UCI.

[0038] <PTRS> Rel. 15 NR supports a Phase Tracking Reference Signal (PTRS). A base station may transmit the PTRS in the downlink. The base station may map the PTRS contiguously or discontinuously in the time direction to a predetermined number of subcarriers (e.g., one subcarrier) and transmit the PTRS.

[0039] The UE may receive the PTRS, for example, during at least a portion of a period (slot, symbol, etc.) during which a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) is scheduled (in other words, during which the PDSCH is received). The PTRS transmitted by the base station may be referred to as a DL PTRS.

[0040] The UE may also transmit the PTRS on the uplink. The UE may map the PTRS contiguously or discontinuously in the time direction on a predetermined number of subcarriers (for example, one subcarrier) and transmit the PTRS.

[0041] For example, the UE may transmit the PTRS during at least a portion of a period (slot, symbol, etc.) in which the Physical Uplink Shared Channel (PUSCH) is scheduled (in other words, the period in which the PUSCH is transmitted). The PTRS transmitted by the UE may be referred to as an UL PTRS.

[0042] The base station or UE may determine phase noise based on the received PTRS and correct the phase error of the received signal (e.g., PUSCH, PDSCH).

[0043] The UE may be configured with PTRS configuration information (PTRS-DownlinkConfig for DL ​​and PTRS-UplinkConfig for UL) using higher layer signaling. For example, the PTRS configuration information may be included in configuration information (DMRS-DownlinkConfig, DMRS-UplinkConfig) of a demodulation reference signal (DMRS) for PDSCH or PUSCH.

[0044] <PTRS and DMRS> In NR (e.g., Rel. 15), a DMRS port associated with a PTRS port is assumed to be QCL with respect to QCL types A and D. In other words, when a PTRS port is associated with a DMRS port, the PTRS port and the DMRS port may be assumed to be in a QCL type A and D relationship with each other.

[0045] Rel. 16 NR supports the association between a PTRS port and a DMRS port (e.g., PTRS-DMRS association) being indicated by a predetermined field in the DCI. The predetermined field may be referred to as a PTRS-DMRS association field or a PTRS-DMRS association field (e.g., a PTRS-DMRS association field).

[0046] Meanwhile, Rel. 16 NR has agreed to support up to two PTRS ports (a first PTRS port and a second PTRS port) for single PDCCH-based multi-panel / TRP transmission. The number of applied / configured PTRS ports (e.g., one or two PTRS ports) may be signaled to the UE by a higher layer parameter.

[0047] When one PTRS port (e.g., PTRS port #0) is configured, the association between the PTRS and the DMRS may be determined based on the code points specified in the PTRS-DMRS association field of the DCI and the correspondence (e.g., table) between each code point and the DMRS port. The correspondence (e.g., table) between each code point and the DMRS port may be predefined (see FIG. 5A).

[0048] Figure 5A shows a case where each code point (here, 0 to 3) in the PTRS-DMRS related field corresponds to a specific DMRS port (here, the first to fourth scheduled DMRS ports correspond, respectively).

[0049] When two PTRS ports (e.g., PTRS port #0 and PTRS port #1) are configured, the association between each PTRS and the DMRS may be determined based on the code points specified in the PTRS-DMRS association field of the DCI and the correspondence (e.g., table) between each code point and the DMRS port. The correspondence (e.g., table) between each code point and the DMRS port may be predefined (see FIG. 5B).

[0050] For example, some of the code points (e.g., the most significant bit (MSB)) may be used to specify the DMRS port for PTRS port #0, and the remaining code points (e.g., the least significant bit (LSB)) may be used to specify the DMRS port for PTRS port #1.

[0051] 5B shows a case where the first DMRS among the DMRSs sharing PTRS #0 is designated when the MSB (here, 1 bit) is 0, and the second DMRS among the DMRSs sharing PTRS #0 is designated when the MSB is 1. Also, a case where the first DMRS among the DMRSs sharing PTRS #0 is designated when the LSB (here, 1 bit) is 0, and the second DMRS among the DMRSs sharing PTRS #0 is designated when the MSB is 1, is shown.

[0052] Information regarding the DMRS (e.g., first DMRS / second DMRS) that shares each PTRS (here, PTRS #0, #1) may be specified in advance, or may be explicitly or implicitly notified by the base station to the UE via DCI / RRC.

[0053] For example, a PUSCH antenna port corresponding to each PTRS port may be defined / configured in advance, and predetermined information regarding the correspondence between the PUSCH antenna port and the DMRS port may be notified to the UE by DCI / RRC. The UE may determine the association between the DMRS port and the PTRS port based on the information regarding the correspondence between the DMRS port and the PUSCH antenna port notified from the base station and the predefined correspondence between the PUSCH antenna port and the PTRS port.

[0054] The predetermined information regarding the correspondence between the PUSCH antenna ports and the DMRS ports may be indicated to the UE by a predetermined field included in the DCI (e.g., the DCI used for scheduling the PUSCH). The predetermined field may be at least one of a "Precoding information and number of layers" field and an "Antenna ports" field.

[0055] For example, it may be defined that PUSCH antenna ports 1000 and 1002 in a designated Transmitted Precoding Matrix Indicator (TPMI) share PTRS port #0, and PUSCH antenna ports 1001 and 1003 in a designated TPMI share PTRS port #1. The TPMI may be specified by the "Precoding information and number of layers" field of the DCI (see FIG. 6).

[0056] PTRS port #0 may be associated with UL layer 'x' of multiple layers transmitted on PUSCH antenna port 1000 and PUSCH antenna port 1002 in the indicated TPMI. PTRS port #1 may be associated with UL layer 'y' of multiple layers transmitted on PUSCH antenna port 1001 and PUSCH antenna port 1003 in the indicated TPMI. x / y may be provided by a PTRS-DMRS association field included in the DCI (e.g., FIG. 5B).

[0057] The specifications may define that PUSCH antenna ports 1000 and 1002 share PTRS port #0, and that PUSCH antenna ports 1001 and 1003 share PTRS port #1. Predetermined information from the base station (hereinafter also referred to simply as "TPMI") may indicate which layer / DMRS port is transmitted from which PUSCH antenna port. This means that the TPMI indicates which layer / DMRS port shares which PTRS port. The PTRS-DMRS association field may indicate that one layer / DMRS port from multiple layers / DMRS ports shares the PTRS port.

[0058] Rel. 17 supports multi-TRP PUSCH repetition using time division multiplexing (TDM) (e.g., TDM M-TRP PUSCH repetition), and PTRS-DMRS association may be indicated on a per-TRP basis.

[0059] When a maximum rank is two (e.g., maxrank=2) and one PTRS port is used, the PTRS-DMRS association of two TRPs may be indicated by a PTRS-DMRS association field (e.g., one field). For example, the MSB of the PTRS-DMRS association field may indicate the first TRP, and the LSB of the PTRS-DMRS association field may indicate the second TRP (see FIG. 7).

[0060] When one or two PTRS ports are used with a maximum rank greater than two (e.g., maxrank>2), the PTRS-DMRS association of the two TRPs may be indicated by a PTRS-DMRS association field and a second PTRS-DMRS association field (see Figures 8A and 8B). Figure 8A shows an example of the PTRS-DMRS association field when one PTRS is configured / applied, and Figure 8B shows an example of the PTRS-DMRS association field when two PTRSs are configured / applied.

[0061] By the way, in future wireless communication systems (for example, Rel.18 NR), when supporting STxMP PUSCH in single DCI-based multi-TRP, the problem is how to control / apply the association of PTRS-DMRS in each method (for example, FDM / SDM). For example, the problem is whether the association of PTRS-DMRS is common to 2 panels / 2TRP, or whether it is controlled separately for each panel / TRP. Also, the problem is how the association of PTRS-DMRS is indicated.

[0062] Therefore, the present inventors have studied a method for appropriately controlling UL transmission even when simultaneous transmission using multiple panels is supported, and have come up with the idea for this embodiment.

[0063] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0064] In the present disclosure, "A / B" and "at least one of A and B" may be interpreted interchangeably. Also, in the present disclosure, "A / B / C" may mean "at least one of A, B, and C."

[0065] In the present disclosure, terms such as activate, deactivate, indicate (or indicate), select, configure, update, and determine may be read interchangeably. In the present disclosure, terms such as support, control, controllable, operate, and operate may be read interchangeably.

[0066] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, fields, information elements (IEs), settings, etc. may be interchangeable. In the present disclosure, Medium Access Control (MAC) control elements (CEs), update commands, activation / deactivation commands, etc. may be interchangeable.

[0067] In the present disclosure, higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0068] In the present disclosure, MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. Broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0069] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0070] In the present disclosure, the terms index, identifier (ID), indicator, resource ID, etc. may be interchangeable. In the present disclosure, the terms sequence, list, set, group, cluster, subset, etc. may be interchangeable.

[0071] In the present disclosure, the terms panel, UE panel, panel group, beam, beam group, precoder, Uplink (UL) transmitting entity, Transmission / Reception Point (TRP), base station, Spatial Relation Information (SRI), spatial relation, SRS Resource Indicator (SRI), Control Resource Set (CORESET), Physical Downlink Shared Channel (PDSCH), Codeword (CW), Transport Block (TB), Reference Signal (RS), antenna port (e.g., Demodulation Reference Signal (DMRS) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, Code Division Multiplexing (CDM) group, reference signal group, CORESET group, Physical Uplink Control Channel (PUCCH) group, PUCCH resource group), resource (e.g., reference signal resource, SRS resource), resource set (e.g., reference signal resource set), CORESET pool, downlink Transmission Configuration Indication state (TCI state) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, Quasi-Co-Location (QCL), QCL assumption, etc. may be read as interchangeable.

[0072] Furthermore, the spatial relationship information identifier (ID) (TCI state ID) and the spatial relationship information (TCI state) may be interchangeable. The "spatial relationship information" may be interchangeable with "set of spatial relationship information," "one or more pieces of spatial relationship information," etc. The TCI state and the TCI may be interchangeable with each other.

[0073] (Wireless communication method) When a UE performs UL transmission (e.g., PUSCH) using one or more beams / panels / TRPs (e.g., first / second beams / panels / TRPs), the UE may determine the association of a DMRS port associated with the UL transmission with a PTRS port based on a predetermined condition. The predetermined condition may be at least one of a transmission scheme applied / configured for the UL transmission (e.g., PUSCH), a PTRS-DMRS association (e.g., a PTRS-DMRS association) field indicated by the DCI, the number of PTRS ports applied / configured, a Transmitted Precoding Matrix Indicator (TPMI) field, and predetermined information (or a combination of two or more of these). The predetermined information may be information indicated / configured by the DCI / higher layer parameter (e.g., information regarding UL transmission / information regarding parameters to be applied to UL transmission).

[0074] The PTRS-DMRS-related field / TPMI-related field may be included in the DCI scheduling the PUSCH. At least one of the number of bits and the number of fields of the PTRS-DMRS-related field / TPMI-related field included in the DCI may be defined in a specification, may be set by a higher layer parameter / DCI, or may be variable based on a predetermined parameter. The predetermined parameter may be, for example, at least one of the number of PTRS ports to be applied / set and a transmission method.

[0075] The first / second beam / panel / TRP may be the first / second SRI / TCI state, the first / second SRI field / TCI state field, the first / second SRS resource set (e.g., SRS resource set with a lower ID / higher ID), a lower / high panel ID (e.g., a lower / higher panel ID), or a lower / high TRP ID (e.g., a lower / higher TRP ID). A panel may refer to a UE capability value set (e.g., a UE capability value set) or other definitions (e.g., a UE antenna group).

[0076] The first / second beam / panel / TRP may be indicated by at least one of DCI, MAC CE, and RRC, for example, by two SRI fields in a Rel. 17 PUSCH repetition, or by one or two TCI status fields.

[0077] In the following description, the MSB of a field may be read as the first bit, and the LSB may be read as the second bit.

[0078] In the following description, an example will be given in which two beams / panels / TRPs are used, but the number of applicable beams / panels / TRPs is not limited to this. This embodiment may also be applied in the same way when three or more beams / panels / TRPs are used.

[0079] First Embodiment The first embodiment relates to a case where FDM (for example, FDM-A) is configured for UL transmission. The term "configure" may be read as "instruct," "apply," "activate," or "enable."

[0080] When a UE performs UL transmission (here, PUSCH) using multiple (e.g., two) beams / panels / TRPs, different portions of the frequency domain resources of one PUSCH transmission opportunity may be transmitted from different UE panels (see Figure 9). The UE may transmit one PUSCH (or one TB) using different portions of the frequency domain resources of one PUSCH transmission opportunity.

[0081] The frequency resources (e.g., resource blocks) of the PUSH associated with the first beam / panel / TRP and the frequency resources of the PUSH associated with the second beam / panel / TRP may correspond to different frequency domain resources of one PUSH transmission opportunity.

[0082] Two beams / panels / TRPs may have the same DMRS port / same TPMI. In the following description, it is assumed that two beams / panels / TRPs have the same DMRS port and the same TPMI, but this is not limited to this. The same may also be applied to the case where three or more beams / panels / TRPs are used.

[0083] [Option 1-1] When UL transmission using two beams / panels / TRPs is supported, one PTRS-DMRS association (e.g., PTRS-DMRS association) may be indicated from the base station to the UE. For example, the base station may indicate one PTRS-DMRS association to the UE using a PTRS-DMRS association field included in the DCI. As an example, the PTRS-DMRS association field supported in Rel. 16 may be reused.

[0084] When UL transmission using two beams / panels / TRPs is supported, a PTRS port (e.g., one or more PTRS ports) may be associated with the same DMRS port (e.g., one or more DMRS ports).

[0085] 10 is a diagram showing an example of PTRS-DMRS association when one PTRS (e.g., PTRS port 0) is configured / applied. The PTRS-DMRS association field (here, 0) included in the DCI determines whether a specific DMRS port (here, 1 st In this case, it may mean that PTRS port 0 is associated with DMRS port 0.

[0086] 11 is a diagram illustrating an example of PTRS-DMRS association when two PTRSs (e.g., PTRS port 0 and PTRS port 1) are configured / applied. The example illustrates a case where the DMRS port corresponding to PTRS port 0 and the DMRS port corresponding to PTRS port 1 are indicated by a PTRS-DMRS association field (here, MSB is 0, LSB is 0) included in the DCI.

[0087] 11 illustrates a case where the DMRS port associated with PTRS Port 0 corresponds to the first DMRS port that shares PTRS Port 0, and the DMRS port associated with PTRS Port 1 corresponds to the first PTRS port that shares PTRS Port 1. In this case, this may mean that PTRS Port 0 is associated with DMRS Port 0, and PTRS Port 1 is associated with DMRS Port 1.

[0088] The correspondence between the DMRS port and the PUSCH antenna port may be determined based on a TPMI field included in the DCI or a predetermined condition. The correspondence between the DMRS port and the PUSCH antenna port (for example, the TPMI field) may be commonly applied to the first beam / panel / TRP and the second beam / panel / TRP.

[0089] [Option 1-2] If UL transmission using two beams / panels / TRPs is supported, two PTRS-DMRS associations may be indicated. For example, the base station may indicate two PTRS-DMRS associations to the UE using a PTRS-DMRS association field included in the DCI. As an example, the PTRS-DMRS association field supported in Rel. 17 may be reused.

[0090] When the maximum rank is 2 (maxRank=2) and one PTRS port is used, the PTRS-DMRS association of two beams / panels / TRPs may be indicated by a PTRS-DMRS association field (one field). The MSB of the PTRS-DMRS association field may correspond to the first beam / first panel / first TRP, and the LSB of the PTRS-DMRS association field may correspond to the second beam / second panel / second TRP.

[0091] 12 is a diagram illustrating an example of PTRS-DMRS association when one PTRS (e.g., PTRS port 0 or an actual PTRS port) is configured / applied. The example illustrates a case where a PTRS-DMRS association for a first beam / first panel / first TRP and a PTRS-DMRS association for a second beam / second panel / second TRP are indicated by a PTRS-DMRS association field (MSB=0, LSB=1) included in the DCI.

[0092] As shown in Figure 12, this may mean that in the first beam / first panel / first TRP (or the first frequency domain resource in the PUSH transmission opportunity), PTRS0 is associated with DMRS port 0, and in the second beam / second panel / second TRP (or the second frequency domain resource in the PUSH transmission opportunity), PTRS0 is associated with DMRS port 1.

[0093] If the maximum rank is greater than 2 (maxRank>2) and one or two PTRS ports are utilized, the PTRS-DMRS association for two beams / panels / TRPs may be indicated by a PTRS-DMRS association field and a second PTRS-DMRS association field (e.g., two fields). The PTRS-DMRS association field may correspond to the first beam / first panel / first TRP, and the second PTRS-DMRS association field may correspond to the second beam / second panel / second TRP.

[0094] The first / second beam / TRP may be referenced by the first / second SRI field. If two SRI fields are reused and correspond to two beams / panels / TRPs of FDM-A, the PTRS-DMRS association of Rel. 17 may be applied.

[0095] 13 is a diagram showing an example of PTRS-DMRS association when two PTRSs (e.g., PTRS port 0 and PTRS port 1) are configured / applied. The example shows a case where a PTRS-DMRS association for a first beam / first panel / first TRP and a PTRS-DMRS association for a second beam / second panel / second TRP are indicated by a PTRS-DMRS association field and a second PTRS-DMRS association field included in the DCI.

[0096] In Figure 13, the PTRS-DMRS association for the first beam / first panel / first TRP is indicated by the PTRS-DMRS association field (here, the MSB is 0 and the LSB is 0) included in the DCI. In this case, this means that in the first beam / first panel / first TRP (or the first frequency domain resource in the PUSCH transmission opportunity), PTRS0 is associated with DMRS port 0 (the first DMRS port that shares PTRS port 0), and PTRS1 is associated with DMRS port 1 (the first DMRS port that shares PTRS port 1).

[0097] Furthermore, a second PTRS-DMRS association field (here, the MSB is 1 and the LSB is 1) included in the DCI indicates PTRS-DMRS association for the second beam / second panel / second TRP. In this case, this means that in the second beam / second panel / second TRP (or the second frequency domain resource in the PUSCH transmission opportunity), PTRS0 is associated with DMRS port 2 (the second DMRS port that shares PTRS port 0), and PTRS1 is associated with DMRS port 3 (the second DMRS port that shares PTRS port 1).

[0098] <<Variations>> When UL transmission using two beams / panels / TRPs is supported, two PTRS-DMRS association fields may be applied if two PTRS-DMRS associations are indicated, respectively, regardless of the number / value of the maximum rank.

[0099] For example, whether the maximum rank is 2 or greater than 2, a PTRS-DMRS association of two beams / panels / TRPs may be indicated by a PTRS-DMRS association field and a second PTRS-DMRS association field (two fields). The PTRS-DMRS association field may correspond to a first beam / first panel / first TRP, and the second PTRS-DMRS association field may correspond to a second beam / second panel / second TRP.

[0100] The UE may determine the number of PTRS-DMRS related fields based on the number of PTRS ports applied / configured. For example, if multiple (e.g., two) PTRS port numbers are applied / configured, the UE may assume that the DCI includes two PTRS-DMRS related fields regardless of the maximum rank number.

[0101] Second Embodiment The second embodiment relates to a case where an FDM (for example, FDM-B) scheme is configured for UL transmission. The term "configure" may be read as "instruct," "apply," "activate," or "enable."

[0102] When a UE performs UL transmission (here, PUSCH) using multiple (e.g., two) beams / panels / TRPs, two PUSCH transmission opportunities with the same / different redundancy versions (same / different RVs) of the same transport block (e.g., TB) may be transmitted from different UE panels on non-overlapping frequency domain resources and the same time domain resources (see Figure 14). A UE may transmit PUSCH repetitions (or PUSCH repetitions of one TB) using two PUSCH transmission opportunities corresponding to different frequency regions at the same time.

[0103] A repetition of a PUSH associated with a first beam / panel / TRP may correspond to a first PUSH transmission opportunity, and a repetition of a PUSH associated with a second beam / panel / TRP may correspond to a second PUSH transmission opportunity.

[0104] Two beams / panels / TRPs may have the same DMRS port / different TPMI. In the following description, it is assumed that two beams / panels / TRPs have the same DMRS port and different TPMI, but this is not limited to this. The same may also be applied to the case where three or more beams / panels / TRPs are used.

[0105] The following Option 2-1 to Option 2-2 may be applied in the same manner as the options in the first embodiment (FDM-A). However, in FDM-B, since different TPMIs are applied to two beams / panels / TRPs, unlike FDM-A, the PTRS-DMRS association of each beam / panel / TRP may be determined for each TPMI of the beam / panel / TRP, taking into account the PTRS-DMRS association indication.

[0106] [Option 2-1] When UL transmission using two beams / panels / TRPs is supported, one PTRS-DMRS association may be instructed from the base station to the UE. For the first / second beam / panel / TRP, the association between the PTRS port and the DMRS port may be determined according to the PTRS-DMRS association and the first / second TPMI, respectively. The first / second TPMI may correspond to the first / second beam / panel / TRP, respectively.

[0107] For example, the base station may indicate one PTRS-DMRS association to the UE using a PTRS-DMRS association field included in the DCI. As an example, the PTRS-DMRS association field supported in Rel. 16 may be reused.

[0108] In this case, the base station may separately indicate the association between the PTRS port and the DMRS port for each PUSCH (or a PUSCH using each beam / panel / TRP) using the TPMI field included in the DCI. Two TPMIs (e.g., the first / second TPMI) may be indicated by one TPMI field, or two TPMIs (e.g., the first / second TPMI) may be indicated by two TPMI fields.

[0109] When one PTRS (e.g., PTRS port 0) is configured / applied, the PTRS-DMRS association may be performed using the method shown in Option 1-1.

[0110] 15 is a diagram illustrating an example of PTRS-DMRS association when two PTRSs (e.g., PTRS port 0 and PTRS port 1) are configured / applied. The example illustrates a case where the DMRS port corresponding to PTRS port 0 and the DMRS port corresponding to PTRS port 1 are indicated by a PTRS-DMRS association field (here, MSB is 0, LSB is 0) included in the DCI.

[0111] Figure 15 shows a case where the DMRS port associated with PTRS port 0 corresponds to the first DMRS port sharing PTRS port 0, and the DMRS port associated with PTRS port 1 corresponds to the first PTRS port sharing PTRS port 1.

[0112] Alternatively, the first TPMI and the second TPMI may separately indicate to the UE the correspondence relationships between DMRS ports and PUSCH antenna ports. Here, the first TPMI indicates that DMRS port 0 corresponds to PUSCH antenna ports 1000 and 1002, that DMRS port 1 corresponds to PUSCH antenna ports 1000 and 1002, that DMRS port 2 corresponds to PUSCH antenna ports 1001 and 1003, and that DMRS port 3 corresponds to PUSCH antenna ports 1001 and 1003. In addition, the second TPMI indicates that DMRS port 0 corresponds to PUSCH antenna port 1000, DMRS port 1 corresponds to PUSCH antenna port 1001, DMRS port 2 corresponds to PUSCH antenna port 1002, and DMRS port 3 corresponds to PUSCH antenna port 1003.

[0113] In this case, this may mean that for the first beam / panel / TRP (or first PUSH transmission opportunity), PTRS port 0 is associated with DMRS port 0 and PTRS port 1 is associated with DMRS port 1.

[0114] It may also mean that for the second beam / panel / TRP (or second PUSH transmission opportunity), PTRS port 0 is associated with DMRS port 0 and PTRS port 1 is associated with DMRS port 2.

[0115] [Option 2-2] Two PTRS-DMRS associations may be indicated for two beams / panels / TRPs, respectively. For example, the base station may indicate two PTRS-DMRS associations to the UE using a PTRS-DMRS association field included in the DCI. As an example, the PTRS-DMRS association field supported in Rel. 17 may be reused.

[0116] When the maximum rank is 2 (maxRank=2) and one PTRS port is used, the PTRS-DMRS association of two beams / panels / TRPs may be indicated by a PTRS-DMRS association field (one field). The MSB of the PTRS-DMRS association field may correspond to the first beam / first panel / first TRP, and the LSB of the PTRS-DMRS association field may correspond to the second beam / second panel / second TRP.

[0117] When one PTRS (e.g., PTRS port 0) is configured / applied, the PTRS-DMRS association may be performed using the method shown in Option 1-2.

[0118] If the maximum rank is greater than 2 (maxRank>2) and one or two PTRS ports are utilized, the PTRS-DMRS association for two beams / panels / TRPs may be indicated by a PTRS-DMRS association field and a second PTRS-DMRS association field (e.g., two fields). The PTRS-DMRS association field may correspond to the first beam / first panel / first TRP, and the second PTRS-DMRS association field may correspond to the second beam / second panel / second TRP.

[0119] The first / second beam / TRP may be referenced by the first / second SRI / TPMI field. If two SRI / TPMI fields are reused and correspond to two beams / panels / TRPs of FDM-B, the PTRS-DMRS association of Rel. 17 may be applied.

[0120] <<Variation>> When two PTRS-DMRS associations are indicated for two beams / panels / TRPs, two PTRS-DMRS association fields may be applied regardless of the number / value of the maximum rank. Whether the maximum rank is 2 or greater than 2, the PTRS-DMRS associations for the two beams / panels / TRPs may be indicated by a PTRS-DMRS association field and a second PTRS-DMRS association field (two fields). The PTRS-DMRS association field may correspond to the first beam / first panel / first TRP, and the second PTRS-DMRS association field may correspond to the second beam / second panel / second TRP.

[0121] 16 is a diagram showing an example of PTRS-DMRS association when two PTRSs (e.g., PTRS port 0 and PTRS port 1) are configured / applied. The example shows a case where a PTRS-DMRS association for a first beam / first panel / first TRP and a PTRS-DMRS association for a second beam / second panel / second TRP are indicated by a PTRS-DMRS association field and a second PTRS-DMRS association field included in the DCI.

[0122] In Figure 16, the PTRS-DMRS association for the first beam / first panel / first TRP is indicated by the PTRS-DMRS association field (here, the MSB is 0 and the LSB is 0) included in the DCI. In this case, in the first beam / first panel / first TRP, PTRS0 is associated with the first DMRS port that shares PTRS port 0, and PTRS1 is associated with the first DMRS port that shares PTRS port 1.

[0123] Additionally, a second PTRS-DMRS association field (here, MSB is 1 and LSB is 1) included in the DCI indicates PTRS-DMRS association for the second beam / second panel / second TRP. In this case, in the second beam / second panel / second TRP, PTRS0 is associated with the second DMRS port that shares PTRS port 0, and PTRS1 is associated with the second DMRS port that shares PTRS port 1.

[0124] Alternatively, the first TPMI and the second TPMI may separately indicate to the UE the correspondence between DMRS ports and PUSCH antenna ports. Here, the first TPMI indicates that DMRS port 0 corresponds to PUSCH antenna port 1000, that DMRS port 1 corresponds to PUSCH antenna port 1001, that DMRS port 2 corresponds to PUSCH antenna port 1002, and that DMRS port 3 corresponds to PUSCH antenna port 1003. In addition, the second TPMI indicates that DMRS port 0 corresponds to PUSCH antenna ports 1000 and 1002, DMRS port 1 corresponds to PUSCH antenna ports 1000 and 1002, DMRS port 2 corresponds to PUSCH antenna ports 1001 and 1003, and DMRS port 3 corresponds to PUSCH antenna ports 1001 and 1003.

[0125] In this case, this means that in the first beam / first panel / first TRP, PTRS0 is associated with DMRS port 0 (the first DMRS port that shares PTRS port 0) and PTRS1 is associated with DMRS port 1 (the first DMRS port that shares PTRS port 1).

[0126] Also, in the second beam / second panel / second TRP, PTRS0 is associated with DMRS port 1 (the second DMRS port that shares PTRS port 0), and PTRS1 is associated with DMRS port 3 (the second DMRS port that shares PTRS port 1).

[0127] Third Embodiment The third embodiment relates to a case where an SDM scheme (or SDM repetition) is configured for UL transmission. The term "configure" may be read as "instruct," "apply," "activate," or "enable."

[0128] When a UE performs UL transmission (here, PUSCH) using multiple (e.g., two) beams / panels / TRPs, different layers / DMRS ports of one PUSCH (e.g., different layers / DMRS ports of one PUSCH) may be precoded separately and simultaneously transmitted from different UE panels (see Figure 17). One or two CWs (or TBs) may be supported in the SDM scheme (or SDM repetition).

[0129] The UE may control transmission using the layer / CW / repetition of the PUSH associated with the first beam / panel / TRP and the layer / CW / repetition of the PUSH associated with the second beam / panel / TRP.

[0130] The two beams / panels / TRPs may have different DMRS ports. In the following description, it is assumed that the two beams / panels / TRPs have different DMRS ports, but this is not limited to this. The same may also be applied to the case where three or more beams / panels / TRPs are used.

[0131] [Option 3-1] When one PTRS (e.g., PTRS port 0) is configured / applied, one PTRS-DMRS association may be indicated. DMRS ports across two beams / panels / TRPs may also be indicated (see FIG. 18). For example, the base station may indicate one PTRS-DMRS association to the UE using the PTRS-DMRS association field included in the DCI. For the DMRS port corresponding to PTRS port 0, the base station may select from DMRS ports across two beams / panels / TRPs and indicate this to the UE. As an example, the PTRS-DMRS association field supported in Rel. 16 may be reused.

[0132] 19 is a diagram showing an example of PTRS-DMRS association when one PTRS (e.g., PTRS port 0) is configured / applied. The PTRS-DMRS association field (here, 0) included in the DCI determines the association of a specific DMRS port (here, 1 stThis shows the case where a scheduled DMRS port is indicated, which may mean that PTRS port 0 is associated with DMRS port 0 among DMRS ports 0-3 across two beams / panels / TRPs.

[0133] [Option 3-2] When two PTRS (e.g., PTRS port 0 / port 1) are configured / applied, PTRS port 0 / port 1 may be configured / applied to the first / second beam / panel / TRP, respectively. PTRS port 0 may be associated with the DMRS port transmitted in the first beam / panel / TRP. PTRS port 1 may be associated with the DMRS port transmitted in the second beam / panel / TRP.

[0134] <<Option 3-2-1>> When PTRS port 0 / port 1 is applied to the first / second beam / panel / TRP, respectively, one PTRS-DMRS association may be indicated. Two beams / panels / TRPs may share the same indication. For example, the UE may apply information about the PTRS-DMRS association indicated by the base station (e.g., one PTRS-DMRS association field) to two beams / panels / TRPs.

[0135] FIG. 20 is a diagram illustrating an example of PTRS-DMRS association (e.g., one PTRS-DMRS association field) indicated to a UE.

[0136] When the PTRS-DMRS association field indicates a first value (e.g., 0), it may mean that PTRS port 0 corresponding to the first beam / panel / TRP is associated with the first DMRS port (here, DMRS port 0) associated with the first beam / panel / TRP, and further, it may mean that PTRS port 1 corresponding to the second beam / panel / TRP is associated with the first DMRS port (here, DMRS port 2) associated with the second beam / panel / TRP (see FIG. 21).

[0137] When the PTRS-DMRS association field indicates a second value (e.g., 1), it may mean that PTRS port 0 corresponding to the first beam / panel / TRP is associated with a second DMRS port (here, DMRS port 1) associated with the first beam / panel / TRP, and further, it may mean that PTRS port 1 corresponding to the second beam / panel / TRP is associated with a second DMRS port (here, DMRS port 3) associated with the second beam / panel / TRP.

[0138] <<Option 3-2-2>> When PTRS port 0 / port 1 is applied to the first / second beam / panel / TRP, respectively, two PTRS-DMRS associations may be indicated for the two beams / panels / TRP, respectively.

[0139] In this case, the PTRS-DMRS association may be indicated in one field (e.g., one PTRS-DMRS association field) (Option 3-2-2-1), or the PTRS-DMRS association may be indicated in two fields (e.g., two PTRS-DMRS association fields) (Option 3-2-2-2).

[0140] [[Option 3-2-2-1]] If the PTRS-DMRS association is indicated in one field, each beam / panel / TRP may have a maximum of X layers (e.g., X=2), the MSB of the field may indicate the PTRS-DMRS association for the first beam / panel / TRP, and the LSB of the field may indicate the PTRS-DMRS association for the second beam / panel / TRP.

[0141] FIG. 22 is a diagram showing an example of a PTRS-DMRS association indication (e.g., one PTRS-DMRS association field) instructed to a UE.

[0142] The UE may determine the DMRS port associated with PTRS port 0 and the DMRS port associated with PTRS port 1 based on the MSB and LSB of the PTRS-DMRS association field. For example, assume that the MSB of the PTRS-DMRS association field is 0 and the LSB is 1 (see FIG. 23).

[0143] In this case, it may mean that PTRS port 0 corresponding to the first beam / panel / TRP is associated with the first DMRS port (here, DMRS port 0) associated with the first beam / panel / TRP, and further, it may mean that PTRS port 1 corresponding to the second beam / panel / TRP is associated with the second DMRS port (here, DMRS port 3) associated with the second beam / panel / TRP (see FIG. 23).

[0144] In addition, a configuration (e.g., layer combination) in which the number of layers (e.g., the maximum number of layers) applied / set in each beam / panel / TRP is different may be supported. For example, a configuration in which one of the first beam / panel / TRP and the second beam / panel / TRP supports 1 layer and the other supports 3 layers (e.g., layer combination 1+3) may be supported.

[0145] FIG. 24 is a diagram showing an example of a PTRS-DMRS association indication (e.g., one PTRS-DMRS association field) when layer combination 1+3 is indicated / set.

[0146] In this case, a PTRS-DMRS association (e.g., a PTRS-DMRS association field) is indicated for one beam / panel / TRP that supports three layers, and a PTRS-DMRS association (e.g., indication by a PTRS-DMRS association field) may not be required for the other beam / panel / TRP that applies one layer.

[0147] The UE may determine the DMRS port associated with the PTRS port of one beam / panel / TRP (e.g., a beam / panel / TRP having three layers) based on the PTRS-DMRS association field.

[0148] For example, assume that the first DMRS port (here, 0) is indicated by the PTRS-DMRS association field (see FIG. 25). In this case, it may mean that the PTRS port corresponding to one beam / panel / TRP (e.g., the first beam / panel / TRP having three layers) is associated with the first DMRS port (here, DMRS port 0) associated with the one beam / panel / TRP.

[0149] The UE may also determine that for the other beam / panel / TRP (e.g., a second beam / panel / TRP having three layers), one predefined / configured PTRS1 and one DMRS port 3 are associated.

[0150] [[Option 3-2-2-2]] When PTRS-DMRS association is indicated using two fields (e.g., two PTRS-DMRS association fields), the first field may be associated with a first beam / panel / TRP and the second field may be associated with a second beam / panel / TRP.

[0151] When PTRS-DMRS association is indicated by two fields, each beam / panel / TRP may have a maximum of X layers (e.g., X=2) and each field may consist of Y bits (e.g., Y=1).

[0152] 26 illustrates an example of a PTRS-DMRS association instruction (e.g., one PTRS-DMRS association field) instructed to a UE, in which a first field indicating a DMRS port associated with PTRS port 0 corresponding to a first beam / panel / TRP and a second field indicating a DMRS port associated with PTRS port 1 corresponding to a second beam / panel / TRP are applied / configured.

[0153] The UE may determine the DMRS port associated with PTRS port 0 based on the first PTRS-DMRS association field, and may determine the DMRS port associated with PTRS port 1 based on the second PTRS-DMRS association field.

[0154] For example, assume that the MSB of the PTRS-DMRS related field is 0 and the LSB is 1 (see Figure 27).

[0155] In this case, it may mean that PTRS port 0 corresponding to the first beam / panel / TRP is associated with the first DMRS port (here, DMRS port 0) associated with the first beam / panel / TRP, and it may also mean that PTRS port 1 corresponding to the second beam / panel / TRP is associated with the second DMRS port (here, DMRS port 3) associated with the second beam / panel / TRP (see FIG. 27).

[0156] In addition, a configuration (e.g., layer combination) in which the number of layers (e.g., the maximum number of layers) applied / set in each beam / panel / TRP is different may be supported. For example, a configuration in which one of the first beam / panel / TRP and the second beam / panel / TRP supports 1 layer and the other supports 3 layers (e.g., layer combination 1+3) may be supported.

[0157] In this case, the PTRS-DMRS related field corresponding to a beam / panel / TRP that supports three layers may have two bits, and the PTRS-DMRS related field corresponding to a beam / panel / TRP that supports one layer may have zero bits (or may not be included in the DCI).

[0158] Figure 28 is a diagram showing an example of a PTRS-DMRS association instruction (e.g., a PTRS-DMRS association field corresponding to a beam / panel / TRP that supports three layers) when layer combination 1+3 is indicated / set.

[0159] In this case, a PTRS-DMRS association (e.g., a PTRS-DMRS association field) is indicated for one beam / panel / TRP that supports three layers, and a PTRS-DMRS association (e.g., a PTRS-DMRS association field) may not be required for the other beam / panel / TRP that applies one layer.

[0160] The UE may determine the DMRS port associated with the PTRS port of one beam / panel / TRP (e.g., a beam / panel / TRP having three layers) based on the PTRS-DMRS association field.

[0161] For example, assume that the first DMRS port (here, 0) is indicated by the PTRS-DMRS association field (see FIG. 29). In this case, it may mean that PTRS port 0 corresponding to one beam / panel / TRP (e.g., a beam / panel / TRP having three layers) is associated with the first DMRS port (here, DMRS port 0) associated with the one beam / panel / TRP.

[0162] [Variation] In existing systems (e.g., Rel. 16), it is defined that the DMRS ports transmitted on PUSCH antenna ports 1000 and 1002 share PTRS port 0, and the DMRS ports transmitted on PUSCH antenna ports 1001 and 1003 share PTRS port 1. When one PTRS port is used for each beam / panel / TRP, the indication of PTRS-DMRS association in Rel. 16 (e.g., the PTRS-DMRS association field) may be reused as follows:

[0163] When an SDM scheme / SDM repetition is configured / indicated and two PTRS ports are applied, PTRS ports 0 / 1 may be applied to the first / second beam / panel / TRP, respectively. PTRS port 0 may be associated with the DMRS port transmitted in the first beam / panel / TRP. PTRS port 1 may be associated with the DMRS port transmitted in the second beam / panel / TRP.

[0164] The DMRS ports transmitted on PUSCH antenna ports 1000 and 1002 may share PTRS port 0, and the DMRS ports transmitted on PUSCH antenna ports 1001 and 1003 may share PTRS port 1. It may further be defined that PUSCH antenna ports 1000 and 1002 are associated with one beam / panel / TRP (e.g., a first beam / panel / TRP), and that PUSCH antenna ports 1001 and 1003 are associated with one beam / panel / TRP (e.g., a second beam / panel / TRP). The DMRS ports associated with the first beam / panel / TRP may share PTRS port 0, and the DMRS ports associated with the second beam / panel / TRP may share PTRS port 1 (see FIG. 30).

[0165] This makes it possible to directly use fields supported in Rel. 16 (e.g., PTRS-DMRS related fields) even when simultaneous transmission using multiple panels is supported.

[0166] In the SDM method / SDM repetition, the UE may assume / expect two PTRS ports to be configured, i.e., the UE may always assume / expect one PTRS port to be applied to each beam / panel / TRP.

[0167] <Fourth embodiment> The fourth embodiment relates to single panel transmission (eg, single panel Tx) and dynamic switching between various schemes (eg, FDM-A scheme / FDM-B scheme / SDM scheme / SDM repetition).

[0168] [FDM-A / FDM-B] Single panel transmission and dynamic switching between FDM-A / FDM-B are assumed.

[0169] If a single-panel transmission is indicated, assuming that one PTRS-DMRS association field is indicated, for a single-panel transmission, the interpretation of the PTRS-DMRS association field may follow the association supported in Rel. 16. The association may be read as a table.

[0170] Assuming that two PTRS-DMRS related fields are indicated, for single panel transmission, at least one of Alt. 1 to Alt. 2 below may be applied.

[0171] [[Alt. 1]] The first PTRS-DMRS association field may be applied. The interpretation of the field may follow the association supported in Rel. 16. The association may be read as a table. The second PTRS-DMRS association field may be ignored.

[0172] [Alt. 2] For single-panel transmission, the PTRS-DMRS association fields corresponding to the indicated panel may be applied. The interpretation of the fields may follow the associations supported in Rel. 16. The associations may be read as a table. Other PTRS-DMRS association fields may be ignored. Also, the first and second PTRS-DMRS association fields may correspond to the first and second panels, respectively.

[0173] [SDM Method / SDM Repeat] Assuming dynamic switching between single panel transmission and SDM method / SDM repeat, when two PTRS ports are configured, at least one of the following options 4-1 to 4-2 may be applied.

[0174] <<Option 4-1>> When a single-panel transmission is indicated and the use of two PTRS ports is supported, assuming that one PTRS-DMRS association field is indicated, the interpretation of the PTRS-DMRS association field for a single-panel transmission may follow the association of the two PTRS ports supported in Rel. 16. The association may be read as a table.

[0175] If a single panel transmission is indicated and the use of two PTRS ports is supported, then assuming two PTRS-DMRS related fields are indicated, at least one of Alt. 1 to Alt. 2 below may apply for the single panel transmission.

[0176] [[Alt. 1]] The first PTRS-DMRS association field may be applied. The interpretation of the field may follow the association of the two PTRS ports supported in Rel. 16. The second PTRS-DMRS association field may be ignored. The association may be read as a table.

[0177] [Alt. 2] For single-panel transmission, the PTRS-DMRS association fields corresponding to the indicated panel may be applied. The interpretation of the fields may follow the association of the two PTRS ports supported in Rel. 16. The association may be read as a table. Other PTRS-DMRS association fields may be ignored. Also, the first and second PTRS-DMRS association fields may correspond to the first and second panels, respectively.

[0178] <<Option 4-2>> If a single-panel transmission is indicated and the use of one PTRS port is supported, assuming that one PTRS-DMRS association field is indicated, the interpretation of the PTRS-DMRS association field for a single-panel transmission may follow the association of one PTRS port supported in Rel. 16. The association may be read as a table.

[0179] If a single panel transmission is indicated and the use of one PTRS port is supported, then assuming that two PTRS-DMRS related fields are indicated, at least one of Alt. 1 to Alt. 2 below may apply for the single panel transmission.

[0180] [[Alt. 1]] The first PTRS-DMRS association field may be applied. The interpretation of the field may follow the association of one PTRS port supported in Rel. 16. The association may be read as a table. The second PTRS-DMRS association field may be ignored.

[0181] [Alt. 2] For single-panel transmission, the PTRS-DMRS association fields corresponding to the indicated panel may be applied. The interpretation of the fields may follow the association of one PTRS port supported in Rel. 16. The association may be read as a table. Other PTRS-DMRS association fields may be ignored. Also, the first and second PTRS-DMRS association fields may correspond to the first and second panels, respectively.

[0182] <Variations> In the first to fourth embodiments, "one PTRS" may not be permitted / supported. For example, when a base station configures the FDM-A scheme / FDM-B scheme / SDM scheme / SDM repetition for a single DCI-based STxMP PUSCH, only two (or more) PTRSs may be configured in a predetermined frequency range (e.g., FR2).

[0183] "One PTRS port" may mean that the PTRS is transmitted to any TRP (e.g., the first TRP #1) (see FIG. 31A). In this case, the other TRP (e.g., TRP #2 that did not receive the PTRS) may determine / obtain phase noise (e.g., phase noise) based on a predetermined rule. FIG. 31A shows a case where the UE transmits one PTRS #1. FIG. 31B shows a case where the UE transmits two PTRS #1 and #2.

[0184] For example, TRP#1 may transmit / notify phase noise information (or PTRS measurement results) to TRP#2 (see FIG. 31A). Transmission / notification from TRP#1 to TRP#2 may be via front / middle / backhaul, X2 link, etc. In this case, since the power amplifier (PA) is common across different UE panels, it may be assumed that the phase noise is common across two PUSCHs for different TRPs.

[0185] The UE may report its panel estimate that the PA is common for PUSHs for different panels / TRPs (e.g., the same PTRS may be used for two PUSHs), or it may report the number of PTRS ports (e.g., {2, 1, and 2}).

[0186] <Supplementary Information> In the first to fourth embodiments, the FDM-A scheme / FDM-B scheme / SDM scheme / SDM repetition may be indicated / configured by at least one of a higher layer parameter indicating a transmission scheme (e.g., a transmission scheme), a DCI indicating a transmission scheme, a DCI indicating two beams (SRI / TCI states) / panels, a DCI indicating two SRI fields / TCI fields, a configuration of two CB / NCB SRS resource sets, and a DCI indicating two or multiple DCM groups for the SDM scheme.

[0187] Single panel transmission may be indicated / configured by at least one of the following: higher layer parameters / DCI that do not enable any of the StxMP transmission methods; DCI that indicates one beam (SRI / TCI state) / panel; DCI that indicates one SRI field / TCI field; configuration of CB / NCB SRS resource sets.

[0188] At least one of the above-described embodiments may be applied only to UEs that have reported or support a particular UE capability.

[0189] The specific UE capabilities may indicate at least one of the following: - Supporting specific processing / operations / control / information (e.g., ...) for at least one of the above embodiments; - Supporting an FDM-A scheme; - Supporting an FDM-B scheme; - Supporting an SDM scheme; - Supporting SDM repetition.

[0190] Furthermore, the above-mentioned specific UE capability may be a capability that is applied across all frequencies (commonly regardless of frequency), or may be a capability for each frequency (e.g., one or a combination of a cell, a band, a band combination, a BWP, a component carrier, etc.), or may be a capability for each frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or may be a capability for each subcarrier spacing (SubCarrier Spacing (SCS)), or may be a capability for each Feature Set (FS) or Feature Set Per Component-carrier (FSPC).

[0191] Furthermore, the specific UE capability may be a capability that is applied to all duplexing methods (commonly regardless of the duplexing method), or may be a capability for each duplexing method (e.g., Time Division Duplex (TDD) or Frequency Division Duplex (FDD)).

[0192] Furthermore, at least one of the above-described embodiments may be applied when the UE is configured with specific information related to the above-described embodiments by higher layer signaling.

[0193] If the UE does not support at least one of the specific UE capabilities or is not configured with the specific information, the UE may apply, for example, the behavior of Rel. 15 / 16 / 17.

[0194] (Supplementary Notes) The following inventions are supplementary notes regarding one embodiment of the present disclosure. [Supplementary Note 1] A terminal having a receiver that receives information regarding a transmission scheme of a Passive Uplink Shared Channel (PUSCH) transmitted using at least one of a plurality of beams, panels, and transmission / reception points, and downlink control information including information indicating an association between an Uplink Phase Tracking Reference Signal (PTRS) and a Demodulation Reference Signal (DMRS) for the PUSCH, and a controller that determines an association between a port of the PTRS and a port of the DMRS based on the transmission scheme applied to the PUSCH, the downlink control information, and the number of ports of the PTRS to be applied. [Supplementary Note 2] The terminal according to Supplementary Note 1, wherein, when the transmission scheme applied to the PUSCH is a frequency division multiplexing scheme or a space division multiplexing scheme, the controller applies the association between the port of the PTRS and the port of the DMRS in common to at least one of the plurality of beams, panels, and transmission / reception points. [Supplementary Note 3] The terminal according to Supplementary Note 1 or Supplementary Note 2, wherein when a transmission scheme applied to the PUSCH is a frequency division multiplexing scheme or a space division multiplexing scheme, the control unit applies the association between a port of the PTRS and a port of the DMRS separately for at least one of the plurality of beams, panels, and transmission / reception points. [Supplementary Note 4] The terminal according to any of Supplementary Note 1 to Supplementary Note 3, wherein the control unit determines the association between a port of the PTRS and a port of the DMRS for at least one of a plurality of beams, panels, and transmission / reception points based on one field included in the downlink control information.

[0195] (Wireless Communication System) The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.

[0196] 32 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 (which may be simply referred to as system 1) may be a system that realizes communication using Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0197] The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0198] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0199] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0200] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are smaller than the macrocell C1. A user terminal 20 may be located within at least one of the cells. The locations and numbers of the cells and user terminals 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.

[0201] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CCs) and dual connectivity (DC).

[0202] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a higher frequency band than FR2.

[0203] Furthermore, the user terminal 20 may perform communication using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0204] The multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with the Common Public Radio Interface (CPRI), an X2 interface, etc.) or wirelessly (e.g., NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0205] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0206] The core network 30 may include network functions (Network Functions (NF)) such as a User Plane Function (UPF), an Access and Mobility management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Application Function (AF), a Data Network (DN), a Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM). A single network node may provide multiple functions. Communication with an external network (e.g., the Internet) may also be performed via the DN.

[0207] The user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0208] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the wireless communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0209] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (e.g., other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0210] In the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. may be used as the downlink channel.

[0211] Furthermore, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), or the like may be used as an uplink channel.

[0212] The PDSCH transmits user data, higher layer control information, a System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit a Master Information Block (MIB).

[0213] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information for at least one of the PDSCH and the PUSCH.

[0214] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as a UL grant, a UL DCI, etc. Note that the PDSCH may be replaced with DL data, and the PUSCH may be replaced with UL data.

[0215] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources for searching for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.

[0216] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. Note that the terms "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," "CORESET configuration," and the like in the present disclosure may be read interchangeably.

[0217] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0218] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning.

[0219] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, as the DL-RS, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted.

[0220] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including an SS (PSS, SSS) and a PBCH (and a DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as a reference signal.

[0221] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), or the like may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).

[0222] (Base Station) Fig. 33 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.

[0223] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0224] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0225] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0226] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0227] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be configured from a transmitting unit and a receiving unit. The transmitting unit may be configured from a transmission processing unit 1211 and an RF unit 122. The receiving unit may be configured from a reception processing unit 1212, the RF unit 122, and a measurement unit 123.

[0228] The transmitting and receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0229] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0230] The transceiver 120 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0231] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0232] The transmitter / receiver unit 120 (transmission processing unit 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0233] The transceiver unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 130.

[0234] On the other hand, the transceiver unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 130.

[0235] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.

[0236] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0237] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30 (e.g., network nodes that provide NF), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0238] The transmitting section and receiving section of the base station 10 in the present disclosure may be configured by at least one of the transmitting / receiving section 120, the transmitting / receiving antenna 130, and the transmission path interface 140.

[0239] In addition, the transceiver unit 120 may transmit information regarding the transmission method of the uplink shared channel (PUSCH) transmitted using at least one of a plurality of beams, panels, and transmission / reception points, and downlink control information including information indicating the association between the uplink phase tracking reference signal (PTRS) and the demodulation reference signal (DMRS) for the PUSCH.

[0240] The control unit 110 may control to indicate the association between the PTRS port and the DMRS port based on the transmission method applied to the PUSH, the downlink control information, and the number of PTRS ports applied.

[0241] (User terminal) Fig. 34 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0242] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0243] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, etc., which are described based on common understanding in the technical field to which the present disclosure relates.

[0244] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals and transfer them to the transceiver unit 220.

[0245] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0246] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0247] The transmitting / receiving antenna 230 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure relates, such as an array antenna.

[0248] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0249] The transceiver unit 220 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0250] The transceiver unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0251] The transmitter / receiver unit 220 (transmission processing unit 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0252] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and if not, it may not be necessary to perform DFT processing as the transmission processing.

[0253] The transceiver unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 230.

[0254] On the other hand, the transceiver unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 230.

[0255] The transceiver unit 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data, etc.

[0256] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0257] The transmitting unit and receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving unit 220 and the transmitting / receiving antenna 230.

[0258] The transceiver unit 220 may receive information regarding a transmission method of a push-button uplink shared channel (PUSCH) transmitted using at least one of a plurality of beams, panels, and transmission / reception points, and downlink control information including information indicating the association between a push-button uplink phase tracking reference signal (PTRS) and a demodulation reference signal (DMRS) for the PUSCH.

[0259] The control unit 210 may determine the association between the PTRS port and the DMRS port based on the transmission method applied to the PUSCH, the downlink control information, and the number of PTRS ports applied.

[0260] When the transmission method applied to the PUSCH is a frequency division multiplexing method or a space division multiplexing method, the control unit 210 may commonly apply the association between the PTRS port and the DMRS port to at least one of multiple beams, panels, and transmission / reception points.

[0261] When the transmission method applied to the PUSCH is a frequency division multiplexing method or a space division multiplexing method, the control unit 210 may separately apply the association between the PTRS port and the DMRS port to at least one of a plurality of beams, panels, and transmission / reception points.

[0262] The control unit 210 may determine the association between the PTRS port and the DMRS port for at least one of a plurality of beams, panels, and transmitting / receiving points based on one field included in the downlink control information.

[0263] (Hardware Configuration) Note that the block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining software with the single device or the multiple devices.

[0264] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As described above, the implementation method of each is not particularly limited.

[0265] For example, a base station, a user terminal, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 35 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0266] In the present disclosure, the terms apparatus, circuit, device, section, unit, etc. may be used interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0267] For example, although only one processor 1001 is shown, there may be multiple processors. Furthermore, processing may be performed by one processor, or processing may be performed by two or more processors simultaneously, serially, or in other ways. Furthermore, processor 1001 may be implemented by one or more chips.

[0268] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading specified software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0269] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transceiver unit 120 (220), etc. may be realized by the processor 1001.

[0270] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be implemented in a similar manner.

[0271] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EEPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, cache, main memory, etc. The memory 1002 may store executable programs (program codes), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.

[0272] Storage 1003 is a computer-readable recording medium and may be composed of at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as an auxiliary storage device.

[0273] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.

[0274] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0275] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0276] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using this hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0277] (Modifications) Note that terms described in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.

[0278] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0279] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, Subcarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, specific filtering performed by a transceiver in the frequency domain, and specific windowing performed by a transceiver in the time domain.

[0280] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may also be a time unit based on numerology.

[0281] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0282] A radio frame, a subframe, a slot, a minislot, and a symbol all represent time units for transmitting signals. The radio frame, the subframe, the slot, the minislot, and the symbol may be referred to by other names corresponding to the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be interchangeable.

[0283] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0284] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. Note that the definition of TTI is not limited to this.

[0285] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0286] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0287] A TTI having a time length of 1 ms may be called a regular TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0288] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and greater than or equal to 1 ms.

[0289] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may be determined based on numerology.

[0290] In addition, an RB may include one or more symbols in the time domain and may have a length of one slot, one minislot, one subframe, or one TTI, each of which may be composed of one or more resource blocks.

[0291] In addition, one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0292] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0293] A Bandwidth Part (BWP), which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0294] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0295] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0296] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0297] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

[0298] The names used for parameters and the like in this disclosure are not intended to be limiting in any way. Furthermore, the mathematical expressions and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0299] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0300] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via multiple network nodes.

[0301] Input and output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0302] The notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0303] Note that the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be referred to as an RRC message, such as an RRC Connection Setup message or an RRC Connection Reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0304] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0305] The determination may be made by a value represented by one bit (0 or 1), by a Boolean value represented by true or false, or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0306] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0307] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), these wired and / or wireless technologies are included within the definition of transmission media.

[0308] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).

[0309] In the present disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," etc. may be used interchangeably.

[0310] In the present disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNB (eNodeB)," "gNB (gNodeB)," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "cell," "sector," "cell group," "carrier," "component carrier," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0311] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication service within that coverage.

[0312] In the present disclosure, a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control / operate based on the information.

[0313] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0314] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0315] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.

[0316] The mobile body is a movable object that can move at any speed and naturally includes cases where the mobile body is stationary. Examples of the mobile body include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and objects mounted thereon. The mobile body may also be a mobile body that moves autonomously based on an operation command.

[0317] The mobile object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Note that at least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0318] 36 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, an electronic control unit 49, various sensors (including a current sensor 50, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0319] The drive unit 41 is configured with at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by a user.

[0320] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (for example, an input / output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0321] The signals from the various sensors 50-58 include a current signal from a current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheels 46 / rear wheels 47 obtained by a rotation speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal of the accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of the shift lever 45 obtained by a shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58.

[0322] The information service unit 59 is composed of various devices, such as a car navigation system, an audio system, speakers, a display, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 uses information acquired from external devices via the communication module 60 or the like to provide various information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0323] The information service unit 59 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0324] The driving assistance system unit 64 includes various devices for providing functions to prevent accidents and reduce the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Units (IMUs), Inertial Navigation Systems (INSs)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driving assistance functions or autonomous driving functions.

[0325] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 to and from the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58, which are provided in the vehicle 40.

[0326] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the base station 10 or the user terminal 20 described above. Furthermore, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (or may function as at least one of the base station 10 and the user terminal 20).

[0327] The communication module 60 may transmit at least one of signals from the above-mentioned various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above-mentioned input.

[0328] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from an external device and displays it on an information service unit 59 provided in the vehicle. The information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0329] Furthermore, the communication module 60 stores various information received from external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided in the vehicle 40.

[0330] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, terms such as an uplink channel and a downlink channel may be read as a sidelink channel.

[0331] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0332] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc.), or a combination thereof.

[0333] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0334] Each aspect / embodiment described in the present disclosure may be a technology other than Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or decimal number)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802. The present invention may be applied to systems that use IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other suitable wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. Furthermore, the present invention may be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0335] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0336] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0337] The term "determining" as used in this disclosure may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, etc.

[0338] Additionally, "determining" may be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), etc.

[0339] Also, "determination" may be considered to be "deciding" resolving, selecting, choosing, establishing, comparing, etc. In other words, "determination" may be considered to be "deciding" some action.

[0340] Furthermore, "judgment (decision)" may be read as "assuming," "expecting," "considering," or the like.

[0341] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0342] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."

[0343] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, etc., as some non-limiting and non-exhaustive examples.

[0344] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0345] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0346] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0347] In the present disclosure, terms such as "less than or equal to," "less than," "greater than," "more than," "equal to," etc. may be interchangeable. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative. Furthermore, in the present disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "fast," "slow," "wide," "narrow," etc. may be interchangeable, not limited to the positive, comparative, and superlative, as expressions with "i-th" (i is an arbitrary integer) attached (for example, "highest" may be interchangeable with "i-th highest").

[0348] In this disclosure, the terms "of," "for," "regarding," "related to," "associated with," etc. may be read interchangeably.

[0349] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and explanatory and does not impose any limiting meaning on the invention according to the present disclosure.

Claims

1. a receiving unit that receives first information indicating a transmission method of a physical uplink shared channel (PUSCH) transmitted using a plurality of panels and second information indicating the number of uplink phase tracking reference signal (PTRS) ports, and receives downlink control information including third information indicating an association between the PTRS and a demodulation reference signal (DMRS) for the PUSCH; A terminal having a control unit that determines the association between the PTRS port and the DMRS port based on the first information, the number of PTRS ports set by the second information, and the third information of the downlink control information.

2. A terminal as described in claim 1, wherein, when the first information indicates a spatial division multiplexing method and the number of PTRS ports set by the second information is two, the first PTRS port is associated with a DMRS port for a first measurement reference signal resource indicator (SRI) field, and the second PTRS port is associated with a DMRS port for a second SRI field.

3. A terminal as described in claim 1, wherein, when the first information indicates a spatial division multiplexing method and the number of PTRS ports set by the second information is two, the most significant bit of the third information indicates an association between the PTRS and the DMRS for a first measurement reference signal resource indicator (SRI) field, and the least significant bit of the third information indicates an association between the PTRS and the DMRS for a second SRI field.

4. A terminal as described in claim 1, wherein, when the first information indicates a spatial division multiplexing method and the number of PTRS ports set by the second information is one, the third information indicates an association between one PTRS port and a DMRS port for a first measurement reference signal resource indicator (SRI) field and a second SRI field.

5. receiving first information indicating a transmission scheme of a physical uplink shared channel (PUSCH) transmitted using a plurality of panels and second information indicating the number of uplink phase tracking reference signal (PTRS) ports, and receiving downlink control information including third information indicating an association between the PTRS and a demodulation reference signal (DMRS) for the PUSCH; A wireless communication method for a terminal, comprising a step of determining the association between the PTRS port and the DMRS port based on the first information, the number of PTRS ports set by the second information, and the third information of the downlink control information.

6. a transmitter that transmits first information indicating a transmission method of a physical uplink shared channel (PUSCH) transmitted using a plurality of panels and second information indicating the number of uplink phase tracking reference signal (PTRS) ports, and transmits downlink control information including third information indicating an association between the PTRS and a demodulation reference signal (DMRS) for the PUSCH; A base station having a control unit that instructs association of the PTRS port with the DMRS port using the first information, the number of PTRS ports in the second information, and the third information in the downlink control information.

7. A system including a terminal and a base station, The terminal a receiving unit that receives first information indicating a transmission method of a physical uplink shared channel (PUSCH) transmitted using a plurality of panels and second information indicating the number of uplink phase tracking reference signal (PTRS) ports, and receives downlink control information including third information indicating an association between the PTRS and a demodulation reference signal (DMRS) for the PUSCH; a control unit that determines an association between a port of the PTRS and a port of the DMRS based on the first information, the number of PTRS ports set by the second information, and the third information of the downlink control information, The base station A system comprising a transmitter that transmits the first information and the second information and transmits the downlink control information.