Terminals, wireless communication methods, base stations and systems

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

Technical Field

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

Background Art

[0002] In a Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) was standardized for the purpose of achieving higher data rates, lower latency, etc. (Non-Patent Document 1). Also, for the purpose of further increasing capacity and sophistication of LTE (Third Generation Partnership Project (3GPP (registered trademark)) Release (Rel.) 8, 9), LTE-Advanced (3GPP Rel. 10-14) was standardized.

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

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

[0005] In future wireless communication systems (e.g., Rel.18 NR and beyond), the UE may use one of its multi-panel (or multi-beam) configurations for uplink (UL) transmission. Furthermore, to improve UL throughput and reliability, support for simultaneous UL transmission using multiple panels (e.g., simultaneous multi-panel UL transmission (SiMPUL)) to one or more transmission / reception points (TRPs) is being considered.

[0006] When multi-panel simultaneous UL transmission is supported, the UE transmits ULs from two panels simultaneously, but how to control UL transmission to one or more panels / TRPs has not been sufficiently investigated.

[0007] Therefore, this disclosure relates to a terminal and wireless communication method that can appropriately control transmission even when simultaneous transmission using multiple panels is supported. 、 base station and system One of the objectives is to provide [this]. [Means for solving the problem]

[0008] A terminal relating to one aspect of this disclosure is multiple no pa Ne Ru Transmission method for the Uplink Shared Channel (PUSCH) used for transmission. The first one to show information and Uplink Phase-Tracking Reference Signal (PTRS) Upon receiving the second piece of information indicating the number of ports, PTRS This shows the relationship between the demodulation reference signal (DMRS) for the PUSCH mentioned above. Third Downlink control information including data Report The receiving unit that receives, and the aforementioned The first piece of information, the number of PTRS ports set by the second piece of information, The aforementioned downlink control information The aforementioned third information and The system includes a control unit that determines the association between the PTRS port and the DMRS port based on the above. [Effects of the Invention]

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

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

[0011] In future wireless communication systems (e.g., after Rel. 18 NR), simultaneous UL transmission using multiple beams / panels / TRPs (e.g., simultaneous multi-panel UL transmission (SiMPUL)) towards one or more Transmission / Reception Points (TRPs) is assumed to be supported.

[0012] For example, in Rel. 18, simultaneous UL transmission using up to 2 TRPs / 2 panels is being considered. Also, considering single DCI-based and multi-DCI-based multi-TRP operations, it is also assumed that the total number of layers is at most 4 layers across all panels and the total number of codewords is at most 2 across all panels. Of course, the number of TRPs, panels, layers, and codewords is not limited to this.

[0013] (Single panel transmission) For the single panel UL transmission method or single panel UL transmission method candidate, at least one of the following transmission methods A and B (single panel UL transmission methods A and B) may be applied. In this disclosure, the panel / UE panel may be read as a UE capability value set (e.g., UE capability value set) reported for each UE capability. Also, in this disclosure, different panels, different spatial relationships, different joint TCI states, different TPC parameters, different antenna ports, etc. may be read as each other.

[0014] [Transmission method A: Single panel single TRP UL transmission] In Rel. 15 and Rel. 16, the UE uses a transmission method where UL is transmitted to one TRP from only one beam and panel at one point in time (Figure 1A).

[0015] [Transmission method B: Single panel multi-TRP UL transmission] In Rel.17, it is being considered to perform UL transmission from only one beam and panel at a single point in time, and to repeatedly transmit to multiple TRPs (Figure 1B). In the example in Figure 1B, the UE transmits a PUSCH from panel #1 to TRP #1 (switching beam and panel), 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, support for simultaneous UL transmission using multiple panels (e.g., simultaneous multi-panel UL transmission (SiMPUL)) to one or more TRPs is being considered to improve UL throughput and reliability. Furthermore, multi-panel UL transmission schemes are being considered for specific UL channels (e.g., PUSCH / PUCCH).

[0017] For multi-panel UL transmissions, for example, up to X panels (e.g., X=2) and up to Y panels (e.g., Y=2) may be supported. If UL precoding instructions for PUSCH are supported in multi-panel UL transmissions, existing system codebooks (e.g., Rel.16 or earlier) may be supported for simultaneous multi-panel transmissions. When considering single-DCI and multi-DCI based multi-TRP operations, the number of layers may be up to x (e.g., x=4) across all panels, and the number of codewords (CW) may be up to y (e.g., y=2) across all panels.

[0018] The multi-panel UL transmission method or candidate multi-panel UL transmission method is considered to be at least one of the following methods 1 to 3 (multi-panel UL transmission methods 1 to 3). 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 set as the UE.

[0019] <Transmission Mode 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 indicated. The SRS resource indicator (SRI) field may be extended. This mode may use up to 4 layers for UL.

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

[0021] <Transmission Mode 2: Non-coherent Multi-panel UL Transmission of One Codeword (CW) or Transport Block (TB)> Multiple panels may not be synchronized. Different layers are mapped to different panels and to 1 CW or TB for PUSCH from multiple panels. The layers corresponding to 1 CW or TB may be mapped to multiple panels. This transmission mode may use up to 4 layers or up to 8 layers for UL. When supporting up to 8 layers, this transmission mode may support 1 CW or TB using up to 8 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 Mode 2 can obtain the gains by multiplexing and diversity. The total number of layers in the two panels is L.

[0023] <Transmission Mode 3: Non-coherent Multi-panel UL Transmission of Two CWs or TBs> Multiple panels do not need to be synchronized. Different layers are mapped to different panels and to two CW or TB signals for a PUSCH from multiple panels. A layer corresponding to one CW or TB signal may be mapped to one panel. Layers corresponding to multiple CW or TB signals may be mapped to different panels. This transmission scheme may use up to 4 or 8 layers for a UL signal. If supporting up to 8 layers, this transmission scheme may support up to 4 layers per CW or TB signal.

[0024] In the example in Figure 2C, the UE maps CW#1 or TB#1 of the 2CW or 2TB signals to k layers (PUSCH(1,2,…,k)) and CW#2 or TB#2 to Lk layers (PUSCH(k+1,k+2,…,L)), transmitting k layers from panel #1 and Lk layers from panel #2. Transmission method 3 can obtain gain through multiplexing and diversity. The total number of layers in the two panels is L.

[0025] In each of the above transmission methods, the base station may set or instruct a 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 instruction supported in Rel.15. Panel ID may be implicitly or explicitly applied to at least one transmission of target RS resource or target RS resource set, PUCCH, SRS, and PRACH. If panel ID is explicitly communicated, panel ID may be set in at least one of target RS, target channel, and reference RS (e.g., DL RS resource configuration or spatial relation information).

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

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

[0028] In this disclosure, repeated transmission and transmission may be interpreted interchangeably. 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 PUSCH repetitions with Space Division Multiplexing (SDM) applied are scheduled to use the same time and frequency resources. That is, if the UE uses multiple coherent panels, it may transmit SDM-applied PUSCH repetitions using the same time and frequency resources.

[0030] Figure 3A shows an example of repeated transmission with SDM applied in a single CW. In Figure 3A, the time and frequency resources of Layers #1-2 and #3-4 corresponding to PUSCH / PUCCH are the same.

[0031] Figure 3B shows an example of repeated transmission with SDM applied to two CW modes. In Figure 3B, CW#1 and CW#2, which correspond to PUSCH / PUCCH, have the same time and frequency resources.

[0032] Figure 3C shows an example of repetitive transmission with SDM applied. In Figure 3C, the time and frequency resources of repetitions #1 and #2 of PUSCH / PUCCH are the same.

[0033] Furthermore, a push transmission using SDM (for example, a push repetition transmission) may have a configuration in which at least a portion of the time and frequency resources overlap.

[0034] [Frequency division multiplexing (FDM)] A UE may assume that frequency division multiplexing (FDM) applied push / pucch repetitions are scheduled on the same time resources but different frequency resources. That is, if a UE uses multiple coherent panels, it may transmit FDM-applied push / pucch repetitions on the same time resources but different frequency resources.

[0035] Figure 4A shows a first example of repeated transmission using FDM (FDM-A). Figure 4A shows an example where one PUSCH / PUCCH repeated transmission is performed per TB / UCI.

[0036] Figure 4B shows a second example of repeated transmission using FDM (FDM-B). Figure 4B shows an example where two PUSCH / PUCCH repeated transmissions are performed for one TB / UCI.

[0037] Figure 4C shows an example of repeated transmission using a single frequency network (SFN). Figure 4C shows an example where one PUSCH / PUCCH is transmitted using a different beam / panel for each TB / UCI.

[0038] <ptrs> In Rel.15 NR, a Phase Tracking Reference Signal (PTRS) is supported. A base station may transmit a PTRS on the downlink. A base station may transmit a PTRS on a predetermined number of subcarriers (e.g., one) with a continuous or discontinuous time mapping.

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

[0040] Furthermore, the UE may transmit PTRS on the uplink. The UE may also transmit PTRS by mapping it continuously or discontinuously in the time direction on a predetermined number (e.g., one) of subcarriers.

[0041] A UE may transmit a PTRS, for example, during at least part of the period (slot, symbol, etc.) in which an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) is scheduled (in other words, during the period in which PUSCH is transmitted). The PTRS transmitted by the UE may be called a UL PTRS.

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

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

[0044] <PTRSとDMRS> In NR (e.g., Rel. 15), a DMRS port associated with a PTRS port is assumed to be a QCL with respect to QCL types A and D. In other words, if 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 indicating the association between PTRS ports and DMRS ports (e.g., PTRS-DMRS association) through a designated field in the DCI. This designated field may also be called the PTRS-DMRS association field or the PTRS-DMRS association field (e.g., PTRS-DMRS association field).

[0046] Incidentally, Rel.16 NR agrees to support a maximum of two PTRS ports (a first PTRS port and a second PTRS port) for single PDCCH-based multi-panel / TRP transmission. The number of PTRS ports to be applied / configured (e.g., one or two PTRS ports) may be communicated to the UE via higher-layer parameters.

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

[0048] Figure 5A shows the case where each code point (here, 0 to 3) in the PTRS-DMRS related field corresponds to a predetermined DMRS port (here, the 1st to 4th scheduled DMRS ports correspond to each).

[0049] If two PTRS ports (e.g., PTRS port #0 and PTRS port #1) are configured, the association between each PTRS and DMRS may be determined based on the code points specified in the DCI's PTRS-DMRS related fields and the correspondence between each code point and the DMRS port (e.g., a table). The correspondence between each code point and the DMRS port (e.g., a table) may be predefined (see Figure 5B).

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

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

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

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

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

[0055] For example, in the Transmitted Precoding Matrix Indicator (TPMI), PUSCH antenna ports 1000 and 1002 may be defined as sharing PTRS port #0, and PUSCH antenna ports 1001 and 1003 in the Transmitted Precoding Matrix Indicator (TPMI) may be defined as sharing PTRS port #1. The TPMI may also be specified by the DCI's "Precoding information and number of layers" field (see Figure 6).

[0056] PTRS port #0 may be associated with the multilayer UL layer 'x' transmitted at PUSCH antenna ports 1000 and 1002 in the specified TPMI. PTRS port #1 may be associated with the multilayer UL layer 'y' transmitted at PUSCH antenna ports 1001 and 1003 in the specified TPMI. x / y may be given by the PTRS-DMRS related fields included in the DCI (e.g., Figure 5B).

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

[0058] Rel.17 supports multi-TRP push repetitions using time-division multiplexing (TDM) (e.g., TDM M-TRP push repetition). The association between PTRS and DMRS may be specified on a TRP basis.

[0059] When the maximum rank is 2 (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 Figure 7).

[0060] When the maximum rank is greater than 2 (e.g., maxrank > 2) and one or two PTRS ports are used, 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 PTRS are configured / applied.

[0061] By the way, when supporting STxMP push in a single DCI-based multi-TRP in future wireless communication systems (e.g., Rel.18 NR), the question arises as to how to control / apply PTRS-DMRS associations in each scheme (e.g., FDM / SDM). For example, the question is whether the PTRS-DMRS association should be common to both panels / trPs or controlled separately for each panel / trP. Another question is how the PTRS-DMRS association should be instructed.

[0062] Therefore, the inventors of this invention considered a method for appropriately controlling UL transmission even when simultaneous transmission using multiple panels is supported, and conceived this embodiment.

[0063] The embodiments of this disclosure will be described in detail below with reference to the drawings. Each wireless communication method according to the embodiments may be applied individually or in combination.

[0064] In this disclosure, "A / B" and "at least one of A and B" may be interpreted as mutually exclusive. In this disclosure, "A / B / C" may mean "at least one of A, B, and C".

[0065] In this disclosure, terms such as activate, deactivate, indicate, select, configure, update, and determine may be interpreted interchangeably. In this disclosure, terms such as support, control, controllable, operate, and operable may be interpreted interchangeably.

[0066] In this disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher-layer parameters, fields, Information Elements (IE), settings, etc., may be interpreted interchangeably. In this disclosure, Medium Access Control elements (MAC Control Element (CE)), update commands, activation / deactivation commands, etc., may be interpreted interchangeably.

[0067] In this disclosure, the upper-layer signaling may be, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof.

[0068] In this disclosure, MAC signaling may include, for example, MAC Control Elements (MAC CEs) and MAC Protocol Data Units (PDUs). Broadcast information may include, for example, Master Information Blocks (MIBs), System Information Blocks (SIBs), Remaining Minimum System Information (RMSIs), and Other System Information (OSIs).

[0069] In this disclosure, physical layer signaling may include, for example, Downlink Control Information (DCI) and Uplink Control Information (UCI).

[0070] In this disclosure, terms such as index, identifier (ID), indicator, and resource ID may be interpreted interchangeably. In this disclosure, terms such as sequence, list, set, group, cluster, and subset may be interpreted interchangeably.

[0071] In this disclosure, the terms used include: panel, UE panel, panel group, beam, beam group, precoder, Uplink (UL) transmit entity, Transmission / Reception Point (TRP), base station, Spatial Relation Information (SRI), spatial relationship, 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 relationship group, Code Division Multiplexing (CDM) group, reference signal group, CORESET group, Physical Uplink Control Channel (PUCCH) groups, PUCCH resource groups, resources (e.g., reference signal resources, SRS resources), resource sets (e.g., reference signal resource sets), CORESET pools, 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 assumptions, etc., may be interpreted interchangeably.

[0072] Furthermore, the spatial relationship information Identifier (ID) (TCI state ID) and spatial relationship information (TCI state) may be interpreted as mutually exclusive. "Spatial relationship information" may be interpreted as mutually exclusive as "a set of spatial relationship information," "one or more spatial relationship information," etc. TCI state and TCI may be interpreted as mutually exclusive.

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

[0074] PTRS-DMRS related fields / TPMI related fields may be included in the DCI that schedules the PUSCH. At least one of the number of bits and fields of the PTRS-DMRS related fields / TPMI related fields included in the DCI may be defined in the specification, set by higher-layer parameters / DCI, or be variable based on predetermined parameters. These predetermined parameters may be, for example, at least one of the number of PTRS ports applied / set and the 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 lower ID / high ID), the lower / high panel ID (e.g., lower / higher panel ID), or the lower / high TRP ID (e.g., lower / higher TRP ID). The panel may refer to a UE capability value set (e.g., UE capability value set) or other definition (e.g., UE antenna group).

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

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

[0078] The following explanation uses the example of using two beams / panels / TRPs, but the number of applicable beams / panels / TRPs is not limited to this. This embodiment may also be applied similarly when using three or more beams / panels / TRPs.

[0079] <First Embodiment> The first embodiment relates to a case where FDM (e.g., FDM-A) is configured for UL transmission. Configuration may be interpreted as instruction, application, activation, or enablement.

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

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

[0082] Two beams / panels / TRPs may have the same DMRS port and the same TPMI. The following description assumes, but is not limited to, two beams / panels / TRPs having the same DMRS port and the same TPMI. The same applies when using three or more beams / panels / TRPs.

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

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

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

[0086] Figure 11 shows an example of PTRS-DMRS association when two PTRSs (e.g., PTRS port 0 and PTRS port 1) are configured / applied. It shows how the PTRS-DMRS association fields included in the DCI (here, MSB is 0, LSB is 0) indicate the DMRS port corresponding to PTRS port 0 and the DMRS port corresponding to PTRS port 1.

[0087] Figure 11 shows 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, it may also 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 the TPMI field included in DCI, or on predetermined conditions. The correspondence between the DMRS port and the PUSCH antenna port (e.g., the TPMI field) may be applied commonly to both the first beam / panel / TRP and the second beam / panel / TRP.

[0089] [Options 1-2] If UL transmission using two beams / panels / TRPs is supported, two PTRS-DMRS associations may be indicated for each. For example, the base station may use the PTRS-DMRS association field included in the DCI to indicate two PTRS-DMRS associations to the UE. 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] Figure 12 shows an example of PTRS-DMRS association when one PTRS (e.g., PTRS port 0 or an actual PTRS port) is configured / applied. It shows how the PTRS-DMRS association field included in the DCI (MSB is 0, LSB is 1) indicates PTRS-DMRS association for the first beam / first panel / first TRP and PTRS-DMRS association for the second beam / second panel / second TRP.

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

[0093] If the maximum rank is greater than 2 (maxRank > 2) and one or two PTRS ports are used, the PTRS-DMRS association of 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 refer to the first / second SRI field. If two SRI fields are reused and the two SRI fields correspond to two beams / panels / TRPs of FDM-A, the PTRS-DMRS association of Rel. 17 may be applied.

[0095] Figure 13 shows an example of PTRS-DMRS association when two PTRSs (e.g., PTRS port 0, PTRS port 1) are configured / applied. It shows how the PTRS-DMRS association field included in the DCI and the second PTRS-DMRS association field indicate the PTRS-DMRS association for the first beam / first panel / first TRP and the PTRS-DMRS association for the second beam / second panel / second TRP.

[0096] In Figure 13, the PTRS-DMRS related fields included in DCI (here, MSB is 0, LSB is 0) indicate the PTRS-DMRS association to the first beam / first panel / first TRP. In this case, it means that in the first beam / first panel / first TRP (or the first frequency domain resource in a PUSCH transmission opportunity), PTRS0 is associated with DMRS port 0 (the first DMRS port sharing PTRS port 0), and PTRS1 is associated with DMRS port 1 (the first DMRS port sharing PTRS port 1).

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

[0098] Variations If UL transmission using two beams / panels / TRPs is supported, and two PTRS-DMRS associations are indicated for each, then two PTRS-DMRS association fields may be applied, regardless of the number / value of the maximum rank.

[0099] For example, whether the maximum rank is 2 or greater than 2, the 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 the first beam / first panel / first TRP, and the second PTRS-DMRS association field may correspond to the 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 ports are applied / configured, the UE may assume that the DCI will contain two PTRS-DMRS related fields, regardless of the maximum rank.

[0101] <Second Embodiment> A second embodiment relates to a case where an FDM (e.g., FDM-B) scheme is configured for UL transmission. Configuration may be interpreted as instruction, application, activation, or enablement.

[0102] When a UE uses multiple (e.g., two) beams / panels / TRPs to perform UL transmission (here, PUSCH), two PUSCH transmission opportunities having the same / different redundant versions (same / different RV) 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). The UE may use two PUSCH transmission opportunities corresponding to different frequency domains at the same time to transmit PUSCH repetitions (or PUSCH repetitions of a single TB).

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

[0104] Two beams / panels / TRPs may have the same DMRS port and different TPMIs. The following description assumes, but is not limited to, two beams / panels / TRPs having the same DMRS port and different TPMIs. The same applies to cases where three or more beams / panels / TRPs are used.

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

[0106] [Option 2-1] If 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 beams / panels / TRPs, 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 beams / panels / TRPs, respectively.

[0107] For example, a base station may use the PTRS-DMRS association field included in the DCI to instruct the UE to perform a single PTRS-DMRS association. 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 each PUSCH utilizing each beam / panel / TRP) using the TPMI fields included in the DCI. One TPMI field may indicate two TPMIs (e.g., the first / second TPMI), or two TPMI fields may indicate two TPMIs (e.g., the first / second TPMI).

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

[0110] Figure 15 shows an example of PTRS-DMRS association when two PTRSs (e.g., PTRS port 0 and PTRS port 1) are configured / applied. It shows how the PTRS-DMRS association fields included in the DCI (here, MSB is 0, LSB is 0) indicate the DMRS port corresponding to PTRS port 0 and the DMRS port corresponding to PTRS port 1.

[0111] Figure 15 shows the 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] Furthermore, the correspondence between DMRS ports and PUSCH antenna ports may be separately instructed to the UE by the first TPMI and the second TPMI. In this case, the first TPMI instructs 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. Additionally, the second TPMI instructs 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, it may mean that for the first beam / panel / TRP (or first PUSCH 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 a second beam / panel / TRP (or second PUSCH 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 instructed for each of the two beams / panels / TRPs. For example, the base station may instruct the UE to provide two PTRS-DMRS associations using the 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 described in Option 1-2.

[0118] If the maximum rank is greater than 2 (maxRank > 2) and one or two PTRS ports are used, the PTRS-DMRS association of 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 refer to the first / second SRI field / TPMI field. If two SRI field / TPMI fields are reused and the two SRI field / TPMI fields correspond to two beams / panels / TRPs of FDM-B, the PTRS-DMRS association of Rel. 17 may be applied.

[0120] Variations If 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 association of 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] Figure 16 shows an example of PTRS-DMRS association when two PTRSs (e.g., PTRS port 0, PTRS port 1) are configured / applied. It shows how the PTRS-DMRS association field included in the DCI and the second PTRS-DMRS association field indicate the PTRS-DMRS association for the first beam / first panel / first TRP and the PTRS-DMRS association for the second beam / second panel / second TRP.

[0122] In Figure 16, the PTRS-DMRS related fields included in DCI (here, MSB is 0, LSB is 0) indicate the PTRS-DMRS association to the first beam / first panel / first TRP. In this case, at the first beam / first panel / first TRP, PTRS0 is associated with the first DMRS port sharing PTRS port 0, and PTRS1 is associated with the first DMRS port sharing PTRS port 1.

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

[0124] Furthermore, the correspondence between DMRS ports and PUSCH antenna ports may be separately instructed to the UE by the first TPMI and the second TPMI. In this case, the first TPMI instructs 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. Additionally, the second TPMI instructs 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, it 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] Furthermore, in the second beam / second panel / second TRP, PTRS0 is associated with DMRS port 1 (a second DMRS port that shares PTRS port 0), and PTRS1 is associated with DMRS port 3 (a second DMRS port that shares PTRS port 1).

[0127] <Third Embodiment> A third embodiment relates to a case where an SDM method (or SDM repetition) is set for UL transmission. Setting may be interpreted as instruction, application, activation, or enablement.

[0128] When a UE uses multiple (e.g., two) beams / panels / TRPs to perform UL transmission (here, PUSCH), different layers / DMRS ports of a single PUSCH may be precoded separately and transmitted simultaneously from different UE panels (see Figure 17). One or two CW (or TB) signals may be supported in the SDM scheme (or SDM repetition).

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

[0130] Two beams / panels / TRPs may have different DMRS ports. The following description assumes, but is not limited to, two beams / panels / TRPs having different DMRS ports. The same applies to cases 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. Alternatively, DMRS ports spanning two beams / panels / TRPs may be indicated (see Figure 18). For example, a base station may use the PTRS-DMRS association field included in the DCI to indicate one PTRS-DMRS association to the UE. The base station may also indicate to the UE, for the DMRS port corresponding to PTRS port 0, to be selected from DMRS ports spanning two beams / panels / TRPs. As an example, the PTRS-DMRS association field supported in Rel. 16 may be reused.

[0132] Figure 19 shows an example of PTRS-DMRS association when one PTRS (e.g., PTRS port 0) is configured / applied. The PTRS-DMRS association field included in the DCI (here, 0) determines the DMRS port (here, 1) st This indicates the case where a scheduled DMRS port is specified. In this case, it may mean that PTRS port 0 is associated with DMRS port 0 of the DMRS ports 0-3 that span two beams / panels / TRPs.

[0133] [Option 3-2] If two PTRSs (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 on the first beam / panel / TRP. PTRS port 1 may be associated with the DMRS port transmitted on the second beam / panel / TRP.

[0134] 《Option 3-2-1》 If 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 both beams / panels / TRPs.

[0135] Figure 20 shows an example of a PTRS-DMRS association (e.g., one PTRS-DMRS related field) indicated to the UE.

[0136] If a first value (e.g., 0) is indicated by the PTRS-DMRS related field, it may mean that PTRS port 0 corresponding to the first beam / panel / TRP is associated with the first DMRS port associated with the first beam / panel / TRP (here, DMRS port 0). Furthermore, it may mean that PTRS port 1 corresponding to the second beam / panel / TRP is associated with the first DMRS port associated with the second beam / panel / TRP (here, DMRS port 2) (see Figure 21).

[0137] If a second value (e.g., 1) is indicated by the PTRS-DMRS related field, it may mean that PTRS port 0 corresponding to the first beam / panel / TRP is associated with the second DMRS port (here, DMRS port 1) associated with the first beam / panel / TRP. Furthermore, 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.

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

[0139] In this case, the PTRS-DMRS association may be indicated by a single field (e.g., one PTRS-DMRS association field) (Option 3-2-2-1). Alternatively, the PTRS-DMRS association may be indicated by 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), where the MSB of the field indicates the PTRS-DMRS association for the first beam / panel / TRP and the LSB of the field indicates the PTRS-DMRS association for the second beam / panel / TRP.

[0141] Figure 22 shows an example of a PTRS-DMRS association instruction (e.g., one PTRS-DMRS association field) directed to the UE.

[0142] The UE may determine which DMRS port is associated with PTRS port 0 and which is associated with PTRS port 1 based on the MSB and LSB of the PTRS-DMRS related field. For example, consider the case where the MSB of the PTRS-DMRS related field is 0 and the LSB is 1 (see Figure 23).

[0143] In this case, it may also 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. Furthermore, 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 Figure 23).

[0144] Furthermore, configurations with different numbers of layers applied / configured (e.g., maximum number of layers) for each beam / panel / TRP (e.g., layer combinations) 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] Figure 24 shows an example of a PTRS-DMRS association instruction (e.g., one PTRS-DMRS association field) when layer combination 1+3 is indicated / configured.

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

[0147] The UE may determine which DMRS ports are associated with the PTRS ports of one beam / panel / TRP (e.g., a beam / panel / TRP with three layers) based on the PTRS-DMRS related fields.

[0148] For example, consider a case where the PTRS-DMRS related field indicates a first DMRS port (here, 0) (see Figure 25). In this case, it may mean that a PTRS port corresponding to one beam / panel / TRP (e.g., a first beam / panel / TRP having 3 layers) is associated with a first DMRS port (here, DMRS port 0) associated with that beam / panel / TRP.

[0149] Furthermore, the UE may determine that one predefined / configured PTRS1 and one DMRS port3 are associated with the other beam / panel / TRP (for example, a second beam / panel / TRP having 3 layers).

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

[0151] If the 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] Figure 26 shows an example of a PTRS-DMRS association instruction (e.g., one PTRS-DMRS association field) directed to the UE. Here, it shows the case where a first field indicates the DMRS port associated with PTRS port 0 corresponding to the first beam / panel / TRP, and a second field indicates the DMRS port associated with PTRS port 1 corresponding to the second beam / panel / TRP.

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

[0154] For example, consider the case where 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. Alternatively, 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 Figure 27).

[0156] Furthermore, configurations with different numbers of layers applied / configured (e.g., maximum number of layers) for each beam / panel / TRP (e.g., layer combinations) 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 the beam / panel / TRP supporting 3 layers may have 2 bits, while the PTRS-DMRS related field corresponding to the beam / panel / TRP supporting 1 layer may have 0 bits (or not be included in the DCI).

[0158] Figure 28 shows an example of PTRS-DMRS association instructions (e.g., PTRS-DMRS associated fields corresponding to beams / panels / TRPs supporting 3 layers) when layer combination 1+3 is indicated / configured.

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

[0160] The UE may determine which DMRS ports are associated with the PTRS ports of one beam / panel / TRP (e.g., a beam / panel / TRP with three layers) based on the PTRS-DMRS related fields.

[0161] For example, suppose the PTRS-DMRS related field indicates a first DMRS port (here, 0) (see Figure 29). In this case, it may mean that PTRS port 0 corresponding to one beam / panel / TRP (e.g., a beam / panel / TRP with 3 layers) is associated with the first DMRS port (here, DMRS port 0) associated with that beam / panel / TRP.

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

[0163] When SDM mode / SDM repetition is set / instructed 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 on the first beam / panel / TRP. PTRS port 1 may be associated with the DMRS port transmitted on the second beam / panel / TRP.

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

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

[0166] In SDM / SDM iteration, the UE may assume / expect that two PTRS ports will be configured. In other words, the UE may always assume / expect that one PTRS port will be assigned to each beam / panel / TRP.

[0167] <Fourth Embodiment> The fourth embodiment relates to single-panel transmission (e.g., single panel Tx) and dynamic switching between each method (e.g., FDM-A method / FDM-B method / SDM method / SDM repeater).

[0168] [FDM-A method / FDM-B method] This assumes single-panel transmission and dynamic switching between FDM-A and FDM-B methods.

[0169] If a single-panel transmission is instructed, and assuming that one PTRS-DMRS related field is instructed, the interpretation of the PTRS-DMRS related field for a single-panel transmission may follow the associations supported in Rel. 16. Associations may be interpreted as tables.

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

[0171] [[Alt.1]] The first PTRS-DMRS related field may be applied. The interpretation of the field may follow the associations supported in Rel. 16. Associations may be interpreted as tables. The second PTRS-DMRS related field may be ignored.

[0172] [[Alt.2]] For a single-panel transmission, the PTRS-DMRS related fields corresponding to the specified panel may be applied. The interpretation of the fields may follow the associations supported in Rel. 16. Associations may be interpreted as tables. Other PTRS-DMRS related fields may be ignored. Also, the first / second PTRS-DMRS related fields may correspond to the first / second panels, respectively.

[0173] [SDM method / SDM iterative] This assumes single-panel transmission and dynamic switching between SDM mode and SDM repetition. If two PTRS ports are configured, at least one of the following options 4-1 to 4-2 may be applied.

[0174] 《Option 4-1》 If single-panel transmission is instructed and the use of two PTRS ports is supported, assuming that one PTRS-DMRS related field is instructed, the interpretation of the PTRS-DMRS related field for single-panel transmission may follow the association of the two PTRS ports supported in Rel. 16. The association may be interpreted as a table.

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

[0176] [[Alt.1]] The first PTRS-DMRS related 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 related field may be ignored. The association may be interpreted as a table.

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

[0178] 《Option 4-2》 Assuming that single-panel transmission is instructed and the use of one PTRS port is supported, and one PTRS-DMRS related field is instructed, the interpretation of the PTRS-DMRS related field for single-panel transmission may follow the association of one PTRS port supported in Rel. 16. The association may be interpreted as a table.

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

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

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

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

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

[0184] For example, TRP#1 may transmit / notify TRP#2 of phase noise information (or PTRS measurement results) (see Figure 31A). Transmission / notification from TRP#1 to TRP#2 may utilize front / middle / backhaul, X2 links, 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 the two pushes for different TRPs.

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

[0186] <Supplement> In the first to fourth embodiments, the FDM-A / FDM-B / SDM / SDM iteration may be indicated / configured by at least one of the following: a higher-layer parameter indicating the transmission scheme; a DCI indicating the transmission scheme; a DCI indicating two beams (SRI / TCI state) / panels; a DCI indicating two SRI / TCI fields; a setting of two CB / NCB SRS resource sets; or 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: a higher-layer parameter / DCI that does not enable any of the StxMP transmission methods; a DCI that indicates one beam (SRI / TCI state) / panel; or a DCI that indicates one SRI field / TCI field, and a setting of a CB / NCB SRS resource set.

[0188] At least one of the embodiments described above may apply only to a UE that has reported or supports a particular UE capability.

[0189] The specific UE capability may represent at least one of the following: • To support specific processing / operation / control / information (e.g., ...) for at least one of the above embodiments, • Supports the FDM-A method. • Supports the FDM-B method. • Supporting the SDM method, • Support SDM iteration.

[0190] Furthermore, the above-mentioned specific UE capabilities may be capabilities that apply across all frequencies (commonly regardless of frequency), capabilities per frequency (e.g., one or a combination thereof, such as cell, band, band combination, BWP, component carrier, etc.), capabilities per frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), capabilities per subcarrier spacing (SCS), or capabilities per feature set (FS) or feature set per component-carrier (FSPC).

[0191] Furthermore, the specific UE capabilities described above may be capabilities that apply across all duplexing schemes (common to all duplexing schemes), or they may be capabilities specific to each duplexing scheme (e.g., Time Division Duplex (TDD), Frequency Division Duplex (FDD)).

[0192] Furthermore, at least one of the embodiments described above may apply when the UE is configured with specific information related to the embodiments described above through upper-layer signaling.

[0193] If the UE does not support at least one of the above-mentioned specific UE capabilities or does not have the above-mentioned specific information configured, the behavior of, for example, Rel.15 / 16 / 17 may be applied.

[0194] (Note) The following invention is added with respect to one embodiment of this disclosure. [Note 1] A terminal having: a receiving unit that receives information about the transmission method of an uplink shared channel (PUSCH) transmitted using at least one of multiple beams, panels and transmit / receive points, and downlink control information including information indicating the relationship between an uplink phase-following reference signal (PTRS) and a demodulation reference signal (DMRS) for the PUSCH; and a control unit that determines the relationship between the ports of the PTRS and the ports of the DMRS based on the transmission method applied to the PUSCH, the downlink control information, and the number of ports of the PTRS to which it is applied. [Note 2] In the case where the transmission method applied to the PUSCH is a frequency division multiplexing or spatial division multiplexing method, the control unit applies a common association between the PTRS port and the DMRS port to at least one of the plurality of beams, panels and transmit / receive points, as described in Appendix 1. [Note 3] In the case where the transmission method applied to the PUSCH is a frequency division multiplexing or spatial division multiplexing method, the control unit separately applies the association between the PTRS port and the DMRS port to at least one of the plurality of beams, panels and transmit / receive points, as described in Appendix 1 or Appendix 2. [Note 4] The terminal according to any one of Appendix 1 to Appendix 3, wherein the control unit determines the association between the PTRS port and the DMRS port for at least one of a plurality of beams, panels, and transmit / receive points based on one field included in the downlink control information.

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

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

[0197] Furthermore, the wireless communication system 1 may 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)), and so on.

[0198] In EN-DC, the LTE (E-UTRA) base station (eNB) is the Master Node (MN), and the NR base station (gNB) is the 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 where both MN and SN are NR base stations (gNB) (NR-NR Dual Connectivity (NN-DC))).

[0200] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with relatively wide coverage, and base stations 12 (12a-12c) located within the macrocell C1 that form a small cell C2 that is narrower than the macrocell C1. User terminals 20 may be located within at least one cell. The arrangement and number of each cell and user terminal 20 are not limited to the configuration shown in the figure. Hereinafter, when base stations 11 and 12 are not distinguished, 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 (CC) and Dual Connectivity (DC).

[0202] Each CC may be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). A macrocell C1 may be included in FR1, and a 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 above 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 fall in a frequency band higher than FR2.

[0203] Furthermore, the user terminal 20 may communicate using at least one of the following methods at each CC: Time Division Duplex (TDD) and Frequency Division Duplex (FDD).

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

[0205] Base station 10 may be connected to the core network 30 via other base stations 10 or directly. The core network 30 may include at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), etc.

[0206] The core network 30 may include network functions (NF) such as User Plane Function (UPF), Access and Mobility Management Function (AMF), Session Management Function (SMF), Unified Data Management (UDM), Application Function (AF), Data Network (DN), Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM). Multiple functions may be provided by a single network node. Furthermore, communication with an external network (e.g., the Internet) may occur via the DN.

[0207] The user terminal 20 may be a terminal that supports at least one of the following communication methods: LTE, LTE-A, 5G, etc.

[0208] In the wireless communication system 1, an orthogonal frequency division multiplexing (OFDM)-based wireless access scheme may be used. 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), etc., may be used in at least one of the downlink (DL) and uplink (UL).

[0209] The wireless access method may also be called a waveform. In wireless communication system 1, other wireless access methods (for example, other single-carrier transmission methods, other multi-carrier transmission methods) may be used for the UL and DL wireless access methods.

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

[0211] Furthermore, in the wireless communication system 1, the uplink channel may include a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), a Physical Random Access Channel (PRACH), etc., shared by each user terminal 20.

[0212] User data, higher-layer control information, and System Information Blocks (SIBs) are transmitted via PDSCH. User data and higher-layer control information may also be transmitted via PUSCH. Furthermore, Master Information Blocks (MIBs) may be transmitted via PBCH.

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

[0214] Furthermore, the DCI that schedules PDSCH may be called a DL assignment or DL ​​DCI, and the DCI that schedules PUSCH may be called a UL grant or UL DCI. Furthermore, PDSCH may be interpreted as DL data, and PUSCH may be interpreted as UL data.

[0215] PDCCH detection may utilize a Control Resource Set (CORESET) and a search space. A CORESET corresponds to the resources used to search for DCIs. A search space corresponds to the search area and search method for PDCCH candidates. A single CORESET may be associated with one or more search spaces. The UE may monitor CORESETs associated with a particular search space based on the search space configuration.

[0216] A single search space may correspond to one or more PDCCH candidates corresponding to aggregation levels. One or more search spaces may be referred to as a search space set. In this disclosure, "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," and "CORESET configuration" may be interpreted interchangeably.

[0217] PUCCH may transmit uplink control information (UCI) which includes at least one of the following: channel state information (CSI), delivery acknowledgment (e.g., Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). PRACH may transmit a random access preamble for establishing a connection with the cell.

[0218] In this disclosure, downlinks, uplinks, etc., may be expressed without the prefix "link." Also, the prefix "physical" may be omitted when describing various channels.

[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 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 SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS / PBCH block, SS Block (SSB), etc. SS, SSB, etc., may also be called reference signals.

[0221] Furthermore, in the wireless communication system 1, the Uplink Reference Signal (UL-RS) may transmit the Sounding Reference Signal (SRS), Demodulation Reference Signal (DMRS), etc. The DMRS may also be called the User-Specific Reference Signal (UE-specific Reference Signal).

[0222] (base station) Figure 33 shows an example of the configuration of a base station according to one 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 one or more of the control unit 110, transceiver unit 120, transceiver antenna 130, and transmission line interface 140 may be provided.

[0223] In this example, the functional blocks of the characteristic parts of this 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 part described below may be omitted.

[0224] The control unit 110 controls the entire base station 10. The control unit 110 can consist of a controller, control circuit, etc., as described based on common understanding in the art relating to this disclosure.

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

[0226] The transmitting / receiving 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 transmitting / receiving unit 120 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0227] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or it may be composed of a transmitting unit and a receiving unit. The transmitting unit may consist of a transmitting processing unit 1211 and an RF unit 122. The receiving unit may consist of a receiving processing unit 1212, an RF unit 122 and a measuring unit 123.

[0228] The transmitting and receiving antenna 130 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0229] The transmitting / receiving unit 120 may transmit the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 120 may also receive the uplink channel, uplink reference signal, etc.

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

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

[0232] The transmitting / receiving unit 120 (transmission processing unit 1211) may perform transmission processing on the bit sequence to be transmitted, 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, and output a baseband signal.

[0233] The transmitting / receiving unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 130.

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

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

[0236] The transmitting / receiving unit 120 (measurement unit 123) may perform measurements related to 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 also measure received power (e.g., Reference Signal Received Power (RSRP)), reception 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 send and receive signals (backhaul signaling) with devices included in the core network 30 (e.g., network nodes providing 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] In this disclosure, the transmitting and receiving units of the base station 10 may consist of at least one of a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission path interface 140.

[0239] The transmitting / receiving unit 120 may also transmit information regarding the transmission method of the uplink shared channel (PUSCH) transmitted using at least one of the multiple beams, panels, and transmitting / receiving points, and downlink control information including information indicating the relationship between the uplink phase-following reference signal (PTRS) and the demodulation reference signal (DMRS) for PUSCH.

[0240] The control unit 110 may control to indicate the association between the ports of the PTRS and the ports 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.

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

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

[0243] The control unit 210 performs overall control of the user equipment 20. The control unit 210 can be composed of a controller, a control circuit, etc. described based on the common knowledge in the technical field related to the present disclosure.

[0244] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may control transmission, 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 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc. described based on the common knowledge 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 it may be composed of a transmitting unit and a receiving unit. The transmitting unit may consist of a transmitting processing unit 2211 and an RF unit 222. The receiving unit may consist of a receiving processing unit 2212, an RF unit 222 and a measuring unit 223.

[0247] The transmitting and receiving antenna 230 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0248] The transmitting / receiving unit 220 may receive the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 220 may also transmit the uplink channel, uplink reference signal, etc.

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

[0250] The transmitting / receiving 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 and control information acquired from the control unit 210, etc., to generate a bit sequence to be transmitted.

[0251] The transmitting / receiving unit 220 (transmission processing unit 2211) may perform transmission processing on the bit sequence to be transmitted, 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, and output a baseband signal.

[0252] Whether or not to apply DFT processing may be based on the transform precoding settings. The transmitting / receiving unit 220 (transmission processing unit 2211) may perform DFT processing as part of the transmission process to transmit a channel (for example, PUSCH) using a DFT-s-OFDM waveform if transform precoding is enabled for that channel, or it may not perform DFT processing as part of the transmission process if transform precoding is not enabled for that channel.

[0253] The transmitting / receiving unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 230.

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

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

[0256] The transmitting / receiving unit 220 (measuring unit 223) may perform measurements related to the received signal. For example, the measuring unit 223 may perform RRM measurement, CSI measurement, etc., based on the received signal. The measuring unit 223 may also 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] In this disclosure, the transmitting and receiving units of the user terminal 20 may consist of at least one of a transmitting / receiving unit 220 and a transmitting / receiving antenna 230.

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

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

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

[0261] If the transmission method applied to PUSCH is a frequency division multiplexing or spatial 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 the multiple beams, panels, and transmit / receive points.

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

[0263] (Hardware configuration) Note that the block diagrams used in the description of the above embodiments show functional unit blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Also, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically combined device, or two or more physically or logically separated devices may be directly or indirectly (e.g., using wired, wireless, etc.) connected and realized using these multiple devices. The functional block may be realized by combining software with the above one device or the above multiple devices.

[0264] Here, functions include, but are not limited to, judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, regarded as, notification (broadcasting), notification (notifying), communication (communicating), forwarding, configuration (configuring), reconfiguration (reconfiguring), allocation (allocating, mapping), assignment (assigning), etc. For example, a functional block (component) that functions to transmit may be referred to as a transmitting unit, a transmitter, etc. In any case, as described above, the realization method is not particularly limited.

[0265] For example, a base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs the processing of the wireless communication method of the present disclosure. FIG. 35 is a diagram showing 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 this disclosure, terms such as apparatus, circuit, device, section, and unit are interchangeable. The hardware configuration of the base station 10 and the user terminal 20 may include one or more of the devices shown in the figure, or it may be configured to omit some of the devices.

[0267] For example, although only one processor 1001 is shown in the diagram, there may be multiple processors. Furthermore, processing may be performed by one processor, or by two or more processors simultaneously, sequentially, or by other means. Note that processor 1001 may be implemented using one or more chips.

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

[0269] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may be composed of a central processing unit (CPU) that includes interfaces with peripheral devices, control units, arithmetic units, registers, etc. For example, at least a part of the control unit 110 (210) and the transmitting / receiving unit 120 (220) described above may be implemented by the processor 1001.

[0270] Furthermore, the processor 1001 reads programs (program code), 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 accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. 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 other functional blocks may be implemented similarly.

[0271] Memory 1002 is a computer-readable recording medium and may consist of at least one of the following: Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. Memory 1002 may also be called a register, cache, or main memory. Memory 1002 can store executable programs (program code), software modules, etc., for carrying out a wireless communication method according to one embodiment of this disclosure.

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

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

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

[0275] Furthermore, each device, such as the processor 1001 and memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for 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), and a field programmable gate array (FPGA), and some or all of each functional block may be implemented using such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0277] (modified version) In addition, terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, channel, symbol, and signal (signal or signaling) may be used interchangeably. Also, a signal may be a message. A reference signal may be abbreviated as RS and may be called a pilot, pilot signal, etc., depending on the applicable standard. Also, a component carrier (CC) may be called a cell, frequency carrier, carrier frequency, etc.

[0278] A wireless frame may consist of one or more periods (frames) in the time domain. Each of these periods (frames) constituting a wireless frame may be called a subframe. Furthermore, a subframe may consist 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 neuralelogy may be communication parameters applied to at least one of the transmission and reception of a signal or channel. The neuralelogy may be, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering processes performed by the transceiver in the frequency domain, or specific windowing processes performed by the transceiver in the time domain.

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

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

[0282] Wireless frames, subframes, slots, minislots, and symbols all represent units of time when transmitting a signal. Wireless frames, subframes, slots, minislots, and symbols may each be referred to by different names. Furthermore, the units of time such as frames, subframes, slots, minislots, and symbols in this disclosure may be interpreted as interchangeable.

[0283] For example, one subframe may be called TTI, multiple consecutive subframes may be called TTI, or one slot or one mini-slot may be called TTI. In other words, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (e.g., 1-13 symbols), or a period longer than 1ms. Note that the unit representing TTI may be called a slot, mini-slot, etc., instead of a subframe.

[0284] Here, TTI refers to, for example, the smallest unit of time for scheduling in wireless communication. For example, in an LTE system, the base station schedules each user terminal to allocate wireless resources (such as the frequency bandwidth and transmission power available to each user terminal) in TTI units. However, the definition of TTI is not limited to this.

[0285] TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, code words, etc., or it may be a processing unit for scheduling, link adaptation, etc. Given a TTI, the actual time interval (e.g., number of symbols) to which the transport block, code block, code word, etc. are mapped may be shorter than the given TTI.

[0286] Furthermore, if one slot or one mini-slot is referred to as TTI, then one or more TTIs (i.e., one or more slots or one or more mini-slots) may constitute the minimum time unit of scheduling. In addition, the number of slots (number of mini-slots) that constitute the minimum time unit of scheduling may be controlled.

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

[0288] Furthermore, long TTIs (e.g., normal TTIs, subframes, etc.) may be interpreted as TTIs with a time length exceeding 1 ms, and short TTIs (e.g., shortened TTIs, etc.) may be interpreted as TTIs with a TTI length less than that of a long TTI but 1 ms or more.

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

[0290] Furthermore, an RB may contain one or more symbols in the time domain and may have the length of one slot, one minislot, one subframe, or one TTI. Each TTI, subframe, etc., may consist of one or more resource blocks.

[0291] One or more RBs may also be called Physical RBs (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

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

[0293] A Bandwidth Part (BWP) (also called a partial bandwidth) may represent a subset of consecutive common resource blocks (RBs) for a given neurology in a given carrier. Here, the common RBs may be identified by an index of the RBs relative to the carrier's common reference point. PRBs may be defined and numbered within a BWP.

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

[0295] At least one of the configured BWPs may be active, and the UE does not need to assume that it will send or receive a given signal / channel outside of the active BWP. In this disclosure, terms such as "cell" and "carrier" may be read as "BWP".

[0296] The structures described above, such as wireless frames, subframes, slots, minislots, and symbols, are merely illustrative examples. For instance, the number of subframes included in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots within a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, and the number of symbols, symbol length, and cyclic prefix (CP) length within a TTI can be varied in various ways.

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

[0298] The names used for parameters and other elements in this disclosure are not restrictive in any way. Furthermore, mathematical formulas and other elements that use these parameters may differ from those expressly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

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

[0300] Furthermore, information, signals, etc., can be output from upper layers to lower layers and from lower layers to upper layers, or to at least one of the two. Information, signals, etc., may also be input and output via multiple network nodes.

[0301] Input and output information and signals may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information and signals may be overwritten, updated, or appended to. Output information and signals may be deleted. Input information and signals may be transmitted to other devices.

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

[0303] Physical layer signaling may also be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signals), L1 control information (L1 control signals), etc. RRC signaling may also be called RRC messages, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc. MAC signaling may also be communicated using, for example, MAC Control Element (CE).

[0304] Furthermore, notification of the specified information (for example, notification that "X is the case") is not limited to explicit notification, but may also be made implicitly (for example, by not providing notification of the specified information or by providing notification of other information).

[0305] The determination may be made by a value represented by 1 bit (0 or 1), by a boolean value represented as true or false, or by a numerical comparison (for example, a comparison with a predetermined value).

[0306] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0307] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0308] The terms “system” and “network” as used in this disclosure may be used interchangeably. “Network” may also mean the equipment included in the network (e.g., base stations).

[0309] In this 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," and "panel" may be used interchangeably.

[0310] In this disclosure, terms such as "Base Station (BS)", "wireless 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", and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0311] A base station can house one or more (e.g., three) cells. If a base station houses multiple cells, the entire coverage area of ​​the base station can be divided into several smaller areas, each of which may also be provided with communication services 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 ​​at least one of the base station and / or base station subsystems that provide communication services in that coverage.

[0312] In this disclosure, the transmission of information by a base station to a terminal may be interpreted as the base station instructing the terminal to perform a control / operation based on said information.

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

[0314] A mobile station may also be called 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 appropriate term.

[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. At least one of the base station and the mobile station may also be a device mounted on a moving object, the moving object itself, etc.

[0316] The term "mobile object" refers to any movable object, regardless of its speed, and naturally includes cases where the mobile object is stationary. Examples of such mobile objects include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcarts, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and items carried on them. Furthermore, such mobile objects may be autonomously driven objects operating based on operational commands.

[0317] The mobile entity may be a vehicle (e.g., a car, an airplane), an unmanned mobile entity (e.g., a drone, an autonomous vehicle), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does 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] Figure 36 shows an example of a vehicle according to one 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, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed sensor 51, a pneumatic 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 consists of, for example, at least one of an engine, a motor, or an engine-motor hybrid. 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 the user.

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

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

[0322] The information service unit 59 consists of various devices for providing (outputting) various types of information such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, displays, television, and radio, and one or more ECUs that control these devices. The information service unit 59 uses information acquired from external devices via a communication module 60 or the like to provide various types of 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 that accept input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) and output devices that perform output to the outside (e.g., display, speaker, LED lamp, touch panel, etc.).

[0324] The driver assistance system unit 64 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, 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 Unit (IMU), Inertial Navigation System (INS)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driver assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driver 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 sends and receives data (information) via the communication port 63 to 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, axle 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50-58 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 external devices. For example, it can send and receive various types of information to and from external devices 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. Alternatively, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 (it 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 the following to an external device via wireless communication: signals from the various sensors 50-58 input to the electronic control unit 49, information obtained based on said signals, and information based on input from an external source (user) obtained via the information service unit 59. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc., may also be called input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above input.

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

[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, axle 48, various sensors 50-58, etc., which are provided in the vehicle 40.

[0330] Furthermore, the term "base station" in this disclosure may be interpreted as "user terminal." For example, the various aspects / embodiments of this 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), Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may have the functions that the base station 10 has. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, uplink channel and downlink channel may be interpreted as sidelink channel.

[0331] Similarly, the term "user terminal" in this disclosure may be replaced with "base station." In this case, the base station 10 may be configured to have the same functions as the user terminal 20 described above.

[0332] In this disclosure, operations performed by a base station may, in some cases, be performed by its upper node. In a network including one or more network nodes with base stations, it is clear that various operations performed for communication with terminals may be performed by the base station, one or more network nodes other than the base station (for example, a Mobility Management Entity (MME), a Serving Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0333] Each aspect / embodiment described in this disclosure may be used individually, in combination, or switched between during execution. Furthermore, the processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described in this disclosure may be rearranged in order, provided they are consistent. For example, the methods described in this disclosure present various step elements in an exemplary order and are not limited to that specific order.

[0334] Each aspect / embodiment described in this disclosure includes 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 (where x is, for example, an integer or decimal)), 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®), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), and IEEE This may apply to systems utilizing 802.20, Ultra-WideBand (UWB), Bluetooth®, or other appropriate wireless communication methods, as well as next-generation systems that are extended, modified, created, or defined based on these. It may also apply to combinations of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0335] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0336] Any reference to elements using the designations “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, the references to the first and second elements do not imply that only two elements may be employed or that the first element must precede the second element in any way.

[0337] The term “determining” as used in this disclosure may encompass a wide variety of actions. For example, “determining” may be considered to include judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiry (e.g., searching in tables, databases, or other data structures), ascertaining, etc.

[0338] Furthermore, "judgment (decision)" may be considered as "judging (deciding)" things like receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory).

[0339] Furthermore, "judgment (decision)" can be considered as "judging (deciding)" something like resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment (decision)" can be considered as "judging (deciding)" something about an action.

[0340] Furthermore, "judgment (decision)" can be replaced with "assuming," "expecting," or "considering."

[0341] The term "maximum transmit power" as used in this disclosure may mean the maximum 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,” and any variations thereof mean any direct or indirect connection or coupling between two or more elements, and may include one or more intermediate elements between two elements that are “connected” or “coupled” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be replaced with “access.”

[0343] In this disclosure, when two elements are connected, they can be considered to be “connected” or “coupled” to each other using one or more wires, cables, printed electrical connections, etc., and, in some non-exclusive and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, or optical domain (both visible and invisible).

[0344] In this 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 "combine" may be interpreted similarly to "different."

[0345] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0346] In this disclosure, if articles are added by translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0347] In this disclosure, terms such as "less than or equal to," "less than," "greater than or equal to," "more than," and "equal to" may be interpreted interchangeably. In addition, in this disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "early," "slow," "wide," and "narrow" may be interpreted interchangeably, not limited to the positive, comparative, and superlative degrees. Furthermore, in this disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "early," "slow," "wide," and "narrow" may be interpreted interchangeably, not limited to the positive, comparative, and superlative degrees, by adding "i-th" (where i is any integer) to the expression (for example, "highest" may be interpreted interchangeably with "i-th highest").

[0348] In this disclosure, "of," "for," "regarding," "related to," and "associated with" may be interpreted as being interchangeable.

[0349] Although the invention described herein has been explained in detail above, it will be clear to those skilled in the art that the invention described herein is not limited to the embodiments described herein. The invention described herein can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined in the claims. Therefore, the descriptions herein are for illustrative purposes only and do not imply any limitation on the invention described herein.< / ptrs>

Claims

1. A receiving unit receives first information indicating the transmission method of an uplink shared channel (PUSCH) transmitted using multiple panels, and second information indicating the number of uplink phase-following reference signal (PTRS) ports, and receives downlink control information including third information indicating the relationship between the PTRS and the demodulation reference signal (DMRS) for the PUSCH. A terminal having a control unit that determines the association between the PTRS ports and the DMRS ports 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. The terminal according to claim 1, wherein, if the first information indicates a spatial division multiplexing scheme 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. The terminal according to claim 1, wherein, when the first information indicates a spatial division multiplexing scheme and the number of PTRS ports set by the second information is two, the most significant bit of the third information indicates the association between the PTRS and the DMRS with respect to a first measurement reference signal resource indicator (SRI) field, and the least significant bit of the third information indicates the association between the PTRS and the DMRS with respect to a second SRI field.

4. The terminal according to claim 1, wherein, if the first information indicates a spatial division multiplexing scheme and the number of PTRS ports set by the second information is one, the third information indicates the association between one PTRS port and a DMRS port to a first measurement reference signal resource indicator (SRI) field and a second SRI field.

5. The steps include receiving first information indicating the transmission method of an uplink shared channel (PUSCH) transmitted using multiple panels, second information indicating the number of uplink phase-following reference signal (PTRS) ports, and receiving downlink control information including third information indicating the relationship between the PTRS and the demodulation reference signal (DMRS) for the PUSCH, A wireless communication method for a terminal, comprising the step of determining the association between the PTRS ports and the DMRS ports 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 transmitting unit transmits first information indicating the transmission method of an uplink shared channel (PUSCH) transmitted using multiple panels, second information indicating the number of uplink phase-following reference signal (PTRS) ports, and downlink control information including third information indicating the relationship between the PTRS and the demodulation reference signal (DMRS) for the PUSCH. A base station having a control unit that instructs the association between the PTRS ports and the DMRS ports using the first information, the number of PTRS ports in the second information, and the third information of the downlink control information.

7. A system including a terminal and a base station, The aforementioned terminal is A receiving unit receives first information indicating the transmission method of an uplink shared channel (PUSCH) transmitted using multiple panels, and second information indicating the number of uplink phase-following reference signal (PTRS) ports, and receives downlink control information including third information indicating the relationship between the PTRS and the demodulation reference signal (DMRS) for the PUSCH. The system includes a control unit that determines the association between the PTRS ports and the DMRS ports 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 aforementioned base station is A system having a transmitting unit that transmits the first information and the second information, and transmits the downlink control information.

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