Terminal, wireless communication method, and base station

Abstract

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

Description

Technical Field

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

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) is standardized for the purpose of further high-speed data rate, low latency, etc. (Non-Patent Document 1). In addition, LTE-Advanced (3GPP Rel. 10-14) is standardized for the purpose of further increasing the capacity and sophistication of LTE (Third Generation Partnership Project (3GPP (registered trademark)) Release (Rel.) 8, 9).

[0003] Successor systems of LTE (also called, for example, fifth generation mobile communication system (5G), 5G+(plus), sixth generation mobile communication system (6G), New Radio (NR), 3GPP Rel.15 and later, etc.) are also being studied.

[0004] Prior art literature

[0005] Non-patent literature

[0006] Non-patent document 1: 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the invention

[0007] Problems to be solved by the invention

[0008] In future wireless communication systems (e.g., Rel.18 NR and later), UE will be able to use one of the multiple panels (or multiple beams) for uplink (UL) transmission. In addition, in order to improve UL throughput / reliability, research is underway to support simultaneous UL transmission using multiple panels (e.g., simultaneous multi-panel UL transmission (SiMPUL)) for more than one transmission / reception point (TRP)).

[0009] When supporting simultaneous UL transmission of multiple panels, the UE transmits UL from two panels simultaneously, but how to control UL transmission for more than one panel / TRP has not been fully studied.

[0010] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately perform transmission control even when supporting simultaneous transmission using multiple panels.

[0011] Means for solving problems

[0012] A terminal involved in one embodiment of the present disclosure comprises: a receiving unit, which receives information related to the transmission method of an uplink shared channel (PUSCH) transmitted using multiple beams, panels and at least one of the transmission and reception points, and downlink control information including information indicating the association between an uplink phase tracking reference signal (PTRS) and a demodulation reference signal (DMRS) for the PUSCH; and a control unit, which determines the association between the port of the PTRS and the port of the DMRS based on the transmission method applied to the PUSCH, the downlink control information, and the number of ports of the applied PTRS.

[0013] Effects of the Invention

[0014] According to one aspect of the present disclosure, even when simultaneous transmission using multiple panels is supported, transmission control can be appropriately performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 1A and 1B are diagrams showing an example of UL transmission using a single panel.

[0016] 2A to 2C are diagrams showing an example of methods 1 to 3 of simultaneous UL transmission using multiple panels.

[0017] 3A to 3C are diagrams showing an example of a PUSCH transmission method.

[0018] 4A to 4C are diagrams showing other examples of the PUSCH transmission method.

[0019] FIG. 5A and FIG. 5B are diagrams showing an example of a PTRS-DMRS association field in Rel.16.

[0020] FIG. 6 is a diagram showing an example of association (or association candidates) between a DMRS port, a PUSCH antenna port, and a PTRS port.

[0021] FIG. 7 is a diagram showing an example of a PTRS-DMRS association field in Rel.17.

[0022] FIG. 8A and FIG. 8B are diagrams showing other examples of the PTRS-DMRS association field in Rel.17.

[0023] FIG. 9 is a diagram showing an example of PUSCH transmission using the FDM-A scheme according to the first embodiment.

[0024] FIG. 10 is a diagram showing an example of the PTRS-DMRS association field and the association between the PTRS port and the DMRS port according to the first embodiment.

[0025] FIG. 11 is a diagram showing another example of the PTRS-DMRS association field and the association between the PTRS port and the DMRS port according to the first embodiment.

[0026] FIG. 12 is a diagram showing another example of the PTRS-DMRS association field and the association between the PTRS port and the DMRS port according to the first embodiment.

[0027] FIG. 13 is a diagram showing another example of the PTRS-DMRS association field and the association between the PTRS port and the DMRS port according to the first embodiment.

[0028] FIG. 14 is a diagram showing an example of PUSCH transmission using the FDM-B scheme according to the second embodiment.

[0029] FIG. 15 is a diagram showing an example of the PTRS-DMRS association field and the association between the PTRS port and the DMRS port according to the second embodiment.

[0030] FIG. 16 is a diagram showing another example of the PTRS-DMRS association field and the association between the PTRS port and the DMRS port according to the second embodiment.

[0031] FIG. 17 is a diagram showing an example of PUSCH transmission using the SDM scheme / SDM repetition according to the third embodiment.

[0032] FIG. 18 is a diagram showing an example of a PTRS-DMRS association field according to the third embodiment.

[0033] FIG. 19 is a diagram showing an example of the PTRS-DMRS association field and the association between the PTRS port and the DMRS port according to the third embodiment.

[0034] FIG. 20 is a diagram showing another example of the PTRS-DMRS association field according to the third embodiment.

[0035] FIG. 21 is a diagram showing another example of the PTRS-DMRS association field and the association between the PTRS port and the DMRS port according to the third embodiment.

[0036] FIG. 22 is a diagram showing another example of the PTRS-DMRS association field according to the third embodiment.

[0037] FIG. 23 is a diagram showing another example of the PTRS-DMRS association field and the association between the PTRS port and the DMRS port according to the third embodiment.

[0038] FIG. 24 is a diagram showing another example of the PTRS-DMRS association field according to the third embodiment.

[0039] FIG. 25 is a diagram showing another example of the PTRS-DMRS association field and the association between the PTRS port and the DMRS port according to the third embodiment.

[0040] FIG. 26 is a diagram showing another example of the PTRS-DMRS association field according to the third embodiment.

[0041] FIG. 27 is a diagram showing another example of the PTRS-DMRS association field and the association between the PTRS port and the DMRS port according to the third embodiment.

[0042] FIG. 28 is a diagram showing another example of the PTRS-DMRS association field according to the third embodiment.

[0043] FIG. 29 is a diagram showing another example of the PTRS-DMRS association field and the association between the PTRS port and the DMRS port according to the third embodiment.

[0044] FIG30 is a diagram showing another example of the PTRS-DMRS association field according to the third embodiment.

[0045] 31A and 31B are diagrams showing an example of the number of PTRS ports sent to TRP.

[0046] FIG32 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0047] FIG33 is a diagram showing an example of a configuration of a base station according to an embodiment.

[0048] FIG. 34 is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0049] FIG35 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to an embodiment.

[0050] FIG. 36 is a diagram showing an example of a vehicle according to an embodiment. DETAILED DESCRIPTION

[0051] In future wireless communication systems (for example, Rel.18 NR and later), it is envisioned that simultaneous UL transmission using multiple beams / panels / TRPs (for example, simultaneous multi-panel UL transmission (SiMPUL)) will be supported for more than one transmission / reception point (Transmission / Reception Point (TRP)).

[0052] For example, in Rel.18, simultaneous UL transmissions utilizing up to 2 TRPs / 2 panels are being studied. In addition, considering single-DCI-based and multi-DCI-based multi-TRP operations, it is also envisioned that the total number of layers across all panels is a maximum of 4 layers, and the total number of codewords across all panels is a maximum of 2. Of course, the number of TRPs, the number of panels, the number of layers, and the number of codewords are not limited to this.

[0053] (Single panel delivery)

[0054] The single-panel UL transmission mode or the single-panel UL transmission mode candidate may also apply at least one of the following transmission modes A and B (single-panel UL transmission modes A and B). In addition, in the present disclosure, the panel / UE panel may also be rewritten as a set of UE capability values ​​reported according to each UE capability (e.g., a UE capability value set). In addition, in the present disclosure, different panels, different spatial relationships, different joint TCI states, different TPC parameters, different antenna ports, etc. may also be rewritten mutually.

[0055] [Transmission method A: single-panel single TRP UL transmission]

[0056] In Rel.15 and Rel.16, a transmission method is used in which the UE transmits UL for one TRP from only one beam and panel at one point in time ( FIG. 1A ).

[0057] [Transmission method B: single-panel multi-TRP UL transmission]

[0058] In Rel.17, the following is being studied: at one point in time, only UL transmission from one beam and panel is performed, and repeated transmission is performed for multiple TRPs (Figure 1B). In the example of Figure 1B, after the UE sends PUSCH from panel #1 to TRP #1 (switching beams and panels), it sends PUSCH from panel #2 to TRP #2. The two TRPs are connected via ideal backhaul.

[0059] (Multi-panel sending)

[0060] After Rel.18, in order to improve UL throughput / reliability, research is underway to support simultaneous UL transmission using multiple panels (e.g., simultaneous multi-panel UL transmission (SiMPUL)) for more than one TRP. In addition, multi-panel UL transmission methods are being studied for specific UL channels (e.g., PUSCH / PUCCH).

[0061] As a multi-panel UL transmission, for example, a maximum of X (for example, X=2) and a maximum of Y (for example, Y=2) panels can also be supported. In multi-panel UL transmission, when supporting UL precoding indication for PUSCH, the codebook of the existing system (for example, before Rel.16) can also be supported for simultaneous transmission of multiple panels. Considering single DCI and multi-TRP operation based on multi-DCI, the number of layers in all panels can also be a maximum of x (for example, x=4), and the number of codewords (CW) in all panels can also be a maximum of y (for example, y=2).

[0062] Regarding the multi-panel UL transmission method or the multi-panel UL transmission method candidate, at least one of the following methods 1 to 3 (multi-panel UL transmission methods 1 to 3) is being studied. It is also possible to support only one of the transmission methods 1 to 3. It is also possible to support multiple methods including at least one of the transmission methods 1 to 3, and one of the multiple transmission methods is set to the UE.

[0063] <Transmission method 1: coherent multi-panel UL transmission>

[0064] Multiple panels can also be synchronized with each other. All layers are mapped to all panels. Multiple simulated beams are indicated. The SRS Resource Indicator (SRI) field can also be extended. This method can also use a maximum of 4 layers for UL.

[0065] In the example of FIG2A , 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 2 panels. Panel #1 and Panel #2 are coherent. Transmission mode 1 can obtain a gain based on diversity. The total number of layers in the 2 panels is 2L. When the maximum number of layers is 4, the maximum number of layers in 1 panel is 2.

[0066] <Transmission mode 2: Non-coherent multi-panel UL transmission of 1 codeword (CW) or transport block (TB)>

[0067] Multiple panels may also be asynchronous. Different layers are mapped to different panels and 1 CW or TB for PUSCH from multiple panels. Layers corresponding to 1 CW or TB may also be mapped to multiple panels. The transmission method may also use a maximum of 4 layers or a maximum of 8 layers for UL. In the case of supporting a maximum of 8 layers, the transmission method may also support the use of 1 CW or TB with a maximum of 8 layers.

[0068] In the example of FIG2B , the UE maps 1 CW or 1 TB to k layers (PUSCH (1, 2, …, k)) and Lk layers (PUSCH (k+1, k+2, …, L)), transmits k layers from panel #1, and transmits Lk layers from panel #2. Transmission mode 2 can obtain gains based on multiplexing and diversity. The total number of layers in 2 panels is L.

[0069] <Transmission method 3: Incoherent multi-panel UL transmission of 2 CW or TB>

[0070] Multiple panels may also be unsynchronized. Different layers are mapped to different panels and 2 CWs or TBs for PUSCH from multiple panels. Layers corresponding to 1 CW or TB may also be mapped to 1 panel. Layers corresponding to multiple CWs or TBs may also be mapped to different panels. The transmission method may also use a maximum of 4 layers or a maximum of 8 layers for UL. In the case of supporting a maximum of 8 layers, the transmission method may also support a maximum of 4 layers per CW or TB.

[0071] In the example of FIG2C , the UE maps CW#1 or TB#1 of the 2 CWs or 2 TBs to k layers (PUSCH (1, 2, …, k)), maps CW#2 or TB#2 to Lk layers (PUSCH (k+1, k+2, …, L)), transmits k layers from panel #1, and transmits Lk layers from panel #2. Transmission mode 3 can obtain gain based on multiplexing and diversity. The total number of layers in the 2 panels is L.

[0072] In each of the above-mentioned transmission modes, the base station may also use UL TCI or panel ID to set or indicate panel-specific transmission for UL transmission. UL TCI (UL TCI state) may also be based on signaling similar to the DL beam indication supported in Rel.15. The panel ID may also be implicitly or explicitly applied to the transmission of at least one of the target RS resource or target RS resource set, PUCCH, SRS, and PRACH. In the case where the panel ID is explicitly notified, the panel ID may also be set in at least one of the target RS, target channel, and reference RS (e.g., DL RS resource setting or spatial relationship information).

[0073] In one or more of the above-mentioned transmission methods / modes, research is underway on: multi-panel UL transmission (for example, simultaneous transmission across multiple panels (STxMP)) regarding scheduling of PUSCH based on one DCI (single DCI) / scheduling of PUSCH based on multiple DCIs (multi-DCI).

[0074] In simultaneous multi-panel transmission (STxMP) in a multi-TRP system based on a single DCI, the following method can also be applied to UL transmission (e.g., PUSCH).

[0075] ・Space Division Multiplexing (SDM) method: Different layers / DMRS ports of one PUSCH are precoded separately and transmitted simultaneously from different UE beams / panels (see Figures 3A and 3B).

[0076] ・SDM repetition method: Two PUSCH transmission opportunities with different redundancy versions (RV) of the same TB are simultaneously transmitted from two different UE beams / panels on the same time and frequency resources (see Figure 3C).

[0077] Frequency Division Multiplexing (FDM)-A: Different parts of the frequency domain resources of one PUSCH transmission opportunity (eg, one PUSCH transmission occasion) are transmitted from different UE beams / panels (see FIG. 4A ).

[0078] ・FDM-B method: Two PUSCH transmission opportunities with the same / different RV of the same TB are transmitted from different UE beams / panels on non-overlapping frequency domain resources and the same time domain resources (see Figure 4B).

[0079] ・SFN-based transmission method: All the same layers / DMRS ports of 1 PUSCH are transmitted simultaneously from 2 different UE beams / panels (see Figure 4C).

[0080] In addition, in the present disclosure, repeatedly sending and sending may also be replaced with each other. Sending multiple TBs may also mean sending multiple identical TBs or sending different TBs.

[0081] [Space Division Multiplexing (SDM)]

[0082] The UE may also assume that PUSCH repetitions to which space division multiplexing (SDM) is applied are scheduled in the same time resource and the same frequency resource. That is, when coherent multiple panels are used, the UE may also transmit PUSCH repetitions to which SDM is applied in the same time resource and the same frequency resource.

[0083] Fig. 3A is a diagram showing an example of repeated transmission to which SDM is applied in one CW. In Fig. 3A , the time and frequency resources of layers #1-2 and layers #3-4 corresponding to PUSCH / PUCCH are the same.

[0084] Fig. 3B is a diagram showing an example of repeated transmission in which SDM is applied to two CWs. In Fig. 3B , the time and frequency resources of CW#1 and CW#2 corresponding to PUSCH / PUCCH are the same.

[0085] Fig. 3C is a diagram showing an example of repetitive transmission to which SDM is applied. In Fig. 3C , the time and frequency resources of repetition #1 and repetition #2 of PUSCH / PUCCH are the same.

[0086] In addition, PUSCH transmission to which SDM is applied (for example, PUSCH repetitive transmission) may be a structure in which at least a part of time and frequency resources are repeated.

[0087] [Frequency Division Multiplexing (FDM)]

[0088] The UE may also assume that PUSCH / PUCCH repetitive transmissions using frequency division multiplexing (FDM) are scheduled in the same time resource and in different frequency resources. That is, when coherent multiple panels are used, the UE may also transmit PUSCH / PUCCH repetitive transmissions using FDM in the same time resource and in different frequency resources.

[0089] Fig. 4A is a diagram showing a first example of iterative transmission to which FDM (FDM-A) is applied. Fig. 4A shows an example in which PUSCH / PUCCH iterative transmission is performed once for each TB / UCI.

[0090] Fig. 4B is a diagram showing a second example of iterative transmission to which FDM (FDM-B) is applied. Fig. 4B shows an example of performing two PUSCH / PUCCH iterative transmissions per 1 TB / UCI.

[0091] Fig. 4C is a diagram showing an example of repeated transmission using a single frequency network (SFN). Fig. 4C shows an example in which one PUSCH / PUCCH is transmitted using a different beam / panel for each TB / UCI.

[0092] <ptrs>

[0093] In Rel.15 NR, the Phase Tracking Reference Signal (PTRS) is supported. The base station can also transmit the PTRS via the downlink. The base station can also map and transmit the PTRS continuously or discontinuously in the time direction in a specific number (e.g., 1) of subcarriers.

[0094] The UE can also receive the PTRS, for example, during at least a part of the period (time slot, symbol, etc.) when the downlink shared channel (Physical Downlink Shared Channel (PDSCH)) is scheduled (in other words, during the period of receiving the PDSCH). The PTRS transmitted by the base station can also be referred to as DL PTRS.

[0095] In addition, the UE can also transmit the PTRS via the uplink. The UE can also map and transmit the PTRS continuously or discontinuously in the time direction in a specific number (e.g., 1) of subcarriers.

[0096] The UE can also transmit the PTRS, for example, during at least a part of the period (time slot, symbol, etc.) when the uplink shared channel (Physical Uplink Shared Channel (PUSCH)) is scheduled (in other words, during the period of transmitting the PUSCH). The PTRS transmitted by the UE can also be referred to as UL PTRS.

[0097] The base station or the UE can also determine the phase noise based on the received PTRS and correct the phase error of the received signal (e.g., PUSCH, PDSCH).

[0098] The UE can also be configured with the PTRS configuration information (PTRS-DownlinkConfig for DL and PTRS-UplinkConfig for UL) using higher layer signaling. For example, this PTRS configuration information can also be included in the configuration information (DMRS-DownlinkConfig, DMRS-UplinkConfig) of the demodulation reference signal (DMRS: Demodulation Reference Signal) for the PDSCH or PUSCH.

[0099] <PTRS and DMRS>

[0100] In NR (eg, 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, when a PTRS port is associated with a DMRS port, the PTRS port and the DMRS port may also be assumed to be in a QCL type A and D relationship with each other.

[0101] In Rel.16 NR, the association between a PTRS port and a DMRS port (e.g., PTRS-DMRS association) may also be supported to be indicated through a specific field of DCI. The specific field may also be referred to as a PTRS-DMRS association field or a PTRS-DMRS association field (e.g., PTRS-DMRS association field).

[0102] However, in Rel.16 NR, for multi-panel / TRP transmission based on a single PDCCH, an agreement was reached to support a maximum of 2 PTRS ports (a first PTRS port and a second PTRS port). The number of PTRS ports applied / set (e.g., 1 or 2 PTRS ports) can also be notified to the UE through higher layer parameters.

[0103] When one PTRS port (e.g., PTRS port #0) is set, the association between PTRS and DMRS may also be determined based on the code point specified by the PTRS-DMRS association field of the DCI 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 also be predefined (see FIG. 5A ).

[0104] FIG. 5A shows a situation where specific DMRS ports correspond to (here, the first to fourth scheduled DMRS ports correspond to) code points (here, 0 to 3) of the PTRS-DMRS association field.

[0105] When two PTRS ports (e.g., PTRS port #0 and PTRS port #1) are set, the association between each PTRS and DMRS may also be determined based on the code point specified by the PTRS-DMRS association field of the DCI and the correspondence between each code point and the DMRS port (e.g., table). The correspondence between each code point and the DMRS port (e.g., table) may also be predefined (see FIG. 5B ).

[0106] For example, a portion of the multiple code points (e.g., the most significant bit (MostSignificant bit (MSB))) may be used to specify a DMRS port for PTRS port #0, and the remaining code points (e.g., the least significant bit (Least Significant Bit (LSB))) may be used to specify a DMRS port for PTRS port #1.

[0107] FIG5B shows a case where, when the MSB (here, 1 bit) is 0, the first DMRS among the DMRSs sharing PTRS#0 is designated, and when the MSB is 1, the second DMRS among the DMRSs sharing PTRS#0 is designated. In addition, a case where, when the LSB (here, 1 bit) is 0, the first DMRS among the DMRSs sharing PTRS#0 is designated, and when the MSB is 1, the second DMRS among the DMRSs sharing PTRS#0 is designated.

[0108] Information on the DMRS (eg, first DMRS / second DMRS) sharing each PTRS (here, PTRS #0, #1) may be defined in a pre-specification or may be explicitly or implicitly notified to the UE from the base station through DCI / RRC.

[0109] For example, the PUSCH antenna port corresponding to each PTRS port may be predefined / set, and specific information related to the correspondence between the PUSCH antenna port and the DMRS port may be notified to the UE via DCI / RRC. The UE may also determine the association between the DMRS port and the PTRS port based on the information related to the correspondence between the DMRS port and the PUSCH antenna port notified from the base station and the predefined correspondence between the PUSCH antenna port and the PTRS port.

[0110] Specific information related to the correspondence between the PUSCH antenna port and the DMRS port may also be indicated to the UE through a specific field included in the DCI (for example, the DCI used in the scheduling of the PUSCH). The specific field may also be at least one of the precoding information and layer number field ("Precoding information and number of layers" field), and the antenna port field ("Antenna ports" field).

[0111] For example, it can also be defined as follows: PUSCH antenna ports 1000 and 1002 in the indicated transmitted precoding matrix indicator (Transmitted Precoding Matrix Indicator (TPMI)) share PTRS port #0, and PUSCH antenna ports 1001 and 1003 in the indicated TPMI share PTRS port #1. TPMI can also be specified by the precoding information and layer number field ("Precoding information and number of layers" field) of the DCI (refer to Figure 6).

[0112] PTRS port #0 may also be associated with UL layer 'x' of multiple layers transmitted via PUSCH antenna port 1000 and PUSCH antenna port 1002 in the indicated TPMI. PTRS port #1 may also be associated with UL layer 'y' of multiple layers transmitted via PUSCH antenna port 1001 and PUSCH antenna port 1003 in the indicated TPMI. x / y may also be given via a PTRS-DMRS association field included in the DCI (e.g., FIG. 5B ).

[0113] It may also be defined in the specification that PUSCH antenna ports 1000 and 1002 share PTRS port #0, and PUSCH antenna ports 1001 and 1003 share PTRS port #1. It may also be indicated by specific information (hereinafter also simply referred to as "TPMI") from the base station which layer / DMRS port is transmitted through which PUSCH antenna port. This means that TPMI indicates which layer / DMRS port shares which PTRS port. It may also be indicated by the PTRS-DMRS association field that one layer / DMRS port among multiple layers / DMRS ports shares the PTRS port.

[0114] Rel. 17 supports multi-TRP PUSCH repetition (eg, TDM M-TRPPUSCH repetition) using time division multiplexing (TDM). PTRS-DMRS association may also be indicated in units of TRP.

[0115] When the maximum rank is 2 (e.g., maxrank=2) and 1 PTRS port is used, the association of PTRS-DMRS of 2 TRPs may also be indicated by a PTRS-DMRS association field (e.g., 1 field). For example, the MSB of the PTRS-DMRS association field may also represent the first TRP, and the LSB of the PTRS-DMRS association field may also represent the second TRP (see FIG. 7 ).

[0116] When the maximum rank is greater than 2 (for example, maxrank>2) and one or two PTRS ports are used, the association of the PTRS-DMRS of the two TRPs can also be indicated by the PTRS-DMRS association field and the second PTRS-DMRS association field (refer to Figures 8A and 8B). Figure 8A shows an example of the PTRS-DMRS association field when one PTRS is set / applied, and Figure 8B shows an example of the PTRS-DMRS association field when two PTRS are set / applied.

[0117] However, in future wireless communication systems (e.g., Rel.18 NR), in the case of supporting STxMP PUSCH in multiple TRPs based on a single DCI, how to control / apply the association of PTRS-DMRS in each method (e.g., FDM / SDM) becomes a problem. For example, whether the association of PTRS-DMRS is set to be common in 2 panels / 2 TRPs or controlled separately for each panel / TRP becomes a problem. In addition, how the association of PTRS-DMRS is indicated becomes a problem.

[0118] Therefore, the inventors of the present invention studied a method of appropriately controlling UL transmission even when supporting simultaneous transmission using multiple panels, and conceived of the present embodiment.

[0119] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the embodiments may be applied individually or in combination.

[0120] In the present disclosure, "A / B" and "at least one of A and B" may be replaced with each other. In addition, in the present disclosure, "A / B / C" may also mean "at least one of A, B, and C".

[0121] In the present disclosure, activate, deactivate, indicate (or specify), select, configure, update, determine, etc. may also be rewritten mutually. In the present disclosure, support, control, controllable, operate, and operateable may also be rewritten mutually.

[0122] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, high-layer parameters, fields, Information Element (IE), settings, etc. may also be overwritten with each other. In the present disclosure, Medium Access Control (MAC Control Element (CE)), update commands, activation / deactivation commands, etc. may also be overwritten with each other.

[0123] In the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0124] In the present disclosure, MAC signaling may also use, for example, MAC Control Element (MACCE), MAC Protocol Data Unit (MAC Protocol Data Unit (PDU)), etc. Broadcast information may also be, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), Other System Information (Other System Information (OSI)), etc.

[0125] In the present disclosure, the physical layer signaling may be, for example, downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI)), etc.

[0126] In the present disclosure, index, identifier (ID), indicator, resource ID, etc. may also be replaced by each other. In the present disclosure, sequence, list, set, group, group, cluster, subset, etc. may also be replaced by each other.

[0127] In the present disclosure, panel, UE panel, panel group, beam, beam group, precoder, uplink (UL) transmission entity, transmission / reception point (TRP), base station, spatial relation information (SRI), spatial relation, SRS resource indicator (SRI), control resource set (CORESET), physical downlink shared channel (PDSCH), codeword (CW), transport block (TB), reference signal (RS), antenna port (e.g., demodulation reference signal (DMRS)) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, code division multiplexing (CDM)) group, reference signal group, CORESET group, physical uplink control channel (PDSCH)), codeword (CW), transport block (TB), reference signal (RS), antenna port (e.g., demodulation reference signal (DMRS)) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, code division multiplexing (CDM)) group, reference signal group, CORESET group, physical uplink control channel (PDSCH)), Channel (PUCCH)) group, PUCCH resource group), resources (for example, reference signal resources, SRS resources), resource sets (for example, reference signal resource sets), CORESET pool, downlink transmission configuration indication state (Transmission Configuration Indicationstate (TCI state)) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, Quasi-Co-Location (QCL)), QCL assumptions, etc. can also be rewritten mutually.

[0128] In addition, the spatial relationship information identifier (Identifier (ID)) (TCI state ID) and the spatial relationship information (TCI state) can also be overwritten with each other. "Spatial relationship information" can also be overwritten with "a collection of spatial relationship information", "one or more spatial relationship information", etc. TCI state and TCI can also be overwritten with each other.

[0129] (Wireless Communication Method)

[0130] When more than one beam / panel / TRP (e.g., the first / second beam / panel / TRP) is used for UL transmission (e.g., PUSCH), the UE may also determine the association between the DMRS port and the PTRS port associated with the UL transmission based on specific conditions. The specific conditions may also be the transmission method applied / set in the UL transmission (e.g., PUSCH), the PTRS-DMRS association (e.g., PTRS-DMRS association) field indicated by the DCI, the number of PTRS ports applied / set, the Transmitted Precoding Matrix Indicator (TPMI) field, and at least one of the specific information (or a combination of more than two of these). The specific information may also be information indicated / set by the DCI / high-level parameters (e.g., information related to the UL transmission / information related to the parameters applied to the UL transmission).

[0131] The PTRS-DMRS association field / TPMI association field may also be included in the DCI for scheduling the PUSCH. At least one of the number of bits and the number of fields of the PTRS-DMRS association field / TPMI association field included in the DCI may be defined in the specification, may be set by a high-level parameter / DCI, and may be variable based on a specific parameter. For example, the specific parameter may also be at least one of the number of PTRS ports applied / set and the transmission method.

[0132] The first / second beam / panel / TRP may also be a first / second SRI / TCI state, a first / second SRI field / TCI state field, a first / second SRS resource set (e.g., an SRS resource set with a low ID / high ID), a low / high panel ID (e.g., a lower / higher panel ID), or a low / high TRP ID (e.g., a lower / higher TRP ID). The panel may also refer to a UE capability value set (e.g., a UE capability value set) or other definition (e.g., a UE antenna group).

[0133] The first / second beam / panel / TRP may also be indicated by at least one of DCI, MAC CE, and RRC. For example, it may also be indicated by two SRI fields in the PUSCH repetition of Rel.17. Alternatively, it may also be indicated by one or two TCI status fields.

[0134] In the following description, the MSB of a field may also be rewritten as the first bit, and the LSB may also be rewritten as the second bit.

[0135] In the following description, the case of using two beams / panels / TRPs is described as an example, but the number of applicable beams / panels / TRPs is not limited thereto. This embodiment can also be applied in the same manner when using three or more beams / panels / TRPs.

[0136] <First Embodiment>

[0137] The first embodiment relates to the case where FDM (for example, FDM-A) is configured for UL transmission. The term "configure" may also be rephrased as "indicate", "apply", "activate", or "enable".

[0138] When the UE uses multiple (e.g., 2) beams / panels / TRPs for UL transmission (here, PUSCH), different parts of the frequency domain resources of one PUSCH transmission opportunity may also be transmitted from different UE panels (see FIG. 9 ). The UE may also use different parts of the frequency domain resources of one PUSCH transmission opportunity to transmit one PUSCH (or, one TB).

[0139] The frequency resources (e.g., resource blocks) of the PUSCH associated with the first beam / panel / TRP and the frequency resources of the PUSCH associated with the second beam / panel / TRP may also correspond to different frequency domain resources of one PUSCH transmission opportunity.

[0140] Two beams / panels / TRPs may also have the same DMRS port / the same TPMI. In the following description, it is assumed that two beams / panels / TRPs have the same DMRS port and the same TPMI, but it is not limited to this. In addition, the same can also be applied when more than three beams / panels / TRPs are used.

[0141] [Option 1-1]

[0142] In the case of supporting UL transmission using 2 beams / panels / TRPs, 1 PTRS-DMRS association (e.g., PTRS-DMRS association) may also be indicated from the base station to the UE. For example, the base station may also indicate 1 PTRS-DMRS association to the UE using the PTRS-DMRS association field included in the DCI. As an example, the PTRS-DMRS association field supported in Rel.16 may also be reused.

[0143] In the case of supporting UL transmission utilizing 2 beams / panels / TRPs, a PTRS port (eg, more than one PTRS port) may also be associated with the same DMRS port (eg, more than one DMRS port).

[0144] FIG. 10 is a diagram showing an example of PTRS-DMRS association when one PTRS (eg, PTRS port 0) is set / applied. st Scheduled DMRS port) is indicated by a PTRS-DMRS association field (here, 0) included in the DCI. In this case, it may also mean that PTRS port 0 is associated with DMRS port 0.

[0145] Fig. 11 is a diagram showing an example of PTRS-DMRS association when two PTRSs (e.g., PTRS port 0 and PTRS port 1) are set / applied. It shows a case where the DMRS port corresponding to PTRS port 0 and the DMRS port corresponding to PTRS port 1 are indicated by the PTRS-DMRS association field (here, the MSB is 0 and the LSB is 0) included in the DCI.

[0146] FIG11 shows a case where the DMRS port associated with PTRS port 0 is equivalent to the first DMRS port shared (shared) with PTRS port 0, and the DMRS port associated with PTRS port 1 is equivalent to the first PTRS port shared with PTRS port 1. In this case, it can also mean that PTRS port 0 is associated with DMRS port 0, and PTRS port 1 is associated with DMRS port 1.

[0147] In addition, the correspondence between the DMRS port and the PUSCH antenna port can also be determined based on the TPMI field included in the DCI or a specific condition. For the first beam / panel / TRP and the second beam / panel / TRP, the correspondence between the DMRS port and the PUSCH antenna port (e.g., the TPMI field) can also be commonly applied.

[0148] [Option 1-2]

[0149] In the case of supporting UL transmission using 2 beams / panels / TRPs, 2 PTRS-DMRS associations may also be indicated separately. For example, the base station may also indicate 2 PTRS-DMRS associations to the UE using the PTRS-DMRS association field included in the DCI. As an example, the PTRS-DMRS association field supported in Rel.17 may also be reused.

[0150] In the case of a maximum rank of 2 (maxRank=2) and using 1 PTRS port, the PTRS-DMRS association of 2 beams / panels / TRPs can also be indicated by the PTRS-DMRS association field (1 field). The MSB of the PTRS-DMRS association field can also correspond to the first beam / first panel / first TRP, and the LSB of the PTRS-DMRS association field can also correspond to the second beam / second panel / second TRP.

[0151] Fig. 12 is a diagram showing an example of PTRS-DMRS association when one PTRS (e.g., PTRS port 0 or an actual PTRS port) is set / applied. It shows that 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 are indicated by the PTRS-DMRS association field (MSB is 0, LSB is 1) included in the DCI.

[0152] In the case shown in Figure 12, it may also mean that in the first beam / first panel / first TRP (or, the first frequency domain resource in the PUSCH transmission opportunity), PTRS0 is associated with DMRS port 0, and in the second beam / second panel / second TRP (or, the second frequency domain resource in the PUSCH transmission opportunity), PTRS0 is associated with DMRS port 1.

[0153] When the maximum rank is greater than 2 (maxRank>2) and 1 or 2 PTRS ports are used, the PTRS-DMRS association of 2 beams / panels / TRPs can also be indicated by a PTRS-DMRS association field and a second PTRS-DMRS association field (e.g., 2 fields). The PTRS-DMRS association field can also correspond to the first beam / first panel / first TRP, and the second PTRS-DMRS association field can also correspond to the second beam / second panel / second TRP.

[0154] The first / second beam / TRP may also refer to the first / second SRI field. In the case where the 2 SRI fields are reused and the 2 SRI fields correspond to the 2 beams / panels / TRPs of FDM-A, the PTRS-DMRS association of Rel.17 may also be applied.

[0155] Fig. 13 is a diagram showing an example of PTRS-DMRS association when two PTRSs (e.g., PTRS port 0, PTRS port 1) are set / applied. It shows that 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 are indicated by the PTRS-DMRS association field and the second PTRS-DMRS association field included in the DCI.

[0156] In Figure 13, the PTRS-DMRS association for the first beam / first panel / first TRP is indicated by the PTRS-DMRS association field (here, the MSB is 0 and the LSB is 0) included in the DCI. In this case, it means that in the first beam / first panel / first TRP (or, the first frequency domain resource in the PUSCH transmission opportunity), PTRS0 is associated with DMRS port 0 (the first DMRS port sharing PTRS port 0), and PTRS1 is associated with DMRS port 1 (the first DMRS port sharing PTRS port 1).

[0157] In addition, the PTRS-DMRS association for the second beam / second panel / second TRP is indicated by the second PTRS-DMRS association field included in the DCI (here, the MSB is 1 and the LSB is 1). In this case, it means that in the second beam / second panel / second TRP (or, the second frequency domain resource in the PUSCH transmission opportunity), PTRS0 is associated with DMRS port 2 (the second DMRS port sharing PTRS port 0), and PTRS1 is associated with DMRS port 3 (the second DMRS port sharing PTRS port 1).

[0158] "change"

[0159] In the case of supporting UL transmission utilizing 2 beams / panels / TRPs, when 2 PTRS-DMRS associations are indicated separately, the 2 PTRS-DMRS association fields may also be applied regardless of the number / value of the maximum rank.

[0160] For example, regardless of whether the maximum rank is 2 or greater than 2, the PTRS-DMRS association of 2 beams / panels / TRPs can also be indicated by the PTRS-DMRS association field and the second PTRS-DMRS association field (2 fields). The PTRS-DMRS association field can also correspond to the first beam / first panel / first TRP, and the second PTRS-DMRS association field can also correspond to the second beam / second panel / second TRP.

[0161] The UE may also determine the number of PTRS-DMRS association fields based on the number of PTRS ports applied / set. For example, in the case where multiple (e.g., 2) PTRS port numbers are applied / set, the UE may also assume that 2 PTRS-DMRS association fields are included in the DCI regardless of the maximum rank number.

[0162] <Second Embodiment>

[0163] The second embodiment relates to the case where the FDM (for example, FDM-B) method is set for UL transmission. The word "set" may also be rephrased as "indicate", "apply", "activate", or "enable".

[0164] In the case where the UE uses multiple (e.g., 2) beams / panels / TRPs for UL transmission (here, PUSCH), 2 PUSCH transmission opportunities with the same / different redundancy versions (same / different RV) of the same transport block (e.g., TB) can also be sent from different UE panels on non-overlapping frequency domain resources and the same time domain resources (see Figure 14). The UE can also use 2 PUSCH transmission opportunities corresponding to different frequency domains at the same time to send PUSCH repetitions (or, PUSCH repetitions of 1 TB).

[0165] The repetition of the PUSCH associated with the first beam / panel / TRP may also correspond to the first PUSCH transmission opportunity, and the repetition of the PUSCH associated with the second beam / panel / TRP may also correspond to the second PUSCH transmission opportunity.

[0166] Two beams / panels / TRPs may also have the same DMRS port / different TPMIs. In the following description, it is assumed that two beams / panels / TRPs have the same DMRS port and different TPMIs, but it is not limited to this. In addition, the same can also be applied when more than three beams / panels / TRPs are used.

[0167] The following options 2-1 and 2-2 can also be applied in the same manner as the options of the first embodiment (FDM-A). In FDM-B, different TPMIs are applied to two beams / panels / TRPs, so unlike FDM-A, the PTRS-DMRS association of each beam / panel / TRP can also be determined for each TPMI of the beam / panel / TRP by considering the PTRS-DMRS association indication.

[0168] [Option 2-1]

[0169] In the case of supporting UL transmission using two beams / panels / TRPs, one PTRS-DMRS association may also be indicated to the UE from the base station. For the first / second beam / panel / TRP, the association between the PTRS port and the DMRS port may also be determined based on the PTRS-DMRS association and the first / second TPMI, respectively. The first / second TPMI may also correspond to the first / second beam / panel / TRP, respectively.

[0170] For example, the base station may also use the PTRS-DMRS association field included in the DCI to indicate one PTRS-DMRS association to the UE. As an example, the PTRS-DMRS association field supported in Rel.16 may also be reused.

[0171] In this case, the base station may also separately indicate the association between the PTRS port and the DMRS port for each PUSCH (or, PUSCH using each beam / panel / TRP) using the TPMI field included in the DCI. Two TPMIs (e.g., the first / second TPMI) may be indicated by one TPMI field, or two TPMIs (e.g., the first / second TPMI) may be indicated by two TPMI fields.

[0172] The method shown in Option 1-1 can also be applied to PTRS-DMRS association in the case where one PTRS (for example, PTRS port 0) is configured / applied.

[0173] Fig. 15 is a diagram showing an example of PTRS-DMRS association when two PTRSs (e.g., PTRS port 0 and PTRS port 1) are set / applied. It shows that the DMRS port corresponding to PTRS port 0 and the DMRS port corresponding to PTRS port 1 are indicated by the PTRS-DMRS association field (here, the MSB is 0 and the LSB is 0) included in the DCI.

[0174] FIG. 15 shows a case where the DMRS port associated with PTRS port 0 corresponds to the first DMRS port of shared PTRS port 0 , and the DMRS port associated with PTRS port 1 corresponds to the first PTRS port of shared PTRS port 1 .

[0175] In addition, the correspondence between the DMRS port and the PUSCH antenna port can also be indicated to the UE through the first TPMI and the second TPMI respectively. Here, the first TPMI indicates that DMRS port 0 corresponds to PUSCH antenna ports 1000 and 1002, DMRS port 1 corresponds to PUSCH antenna ports 1000 and 1002, DMRS port 2 corresponds to PUSCH antenna ports 1001 and 1003, and DMRS port 3 corresponds to PUSCH antenna ports 1001 and 1003. In addition, the second TPMI indicates that DMRS port 0 corresponds to PUSCH antenna port 1000, DMRS port 1 corresponds to PUSCH antenna port 1001, DMRS port 2 corresponds to PUSCH antenna port 1002, and DMRS port 3 corresponds to PUSCH antenna port 1003.

[0176] In this case, it may also mean that for the first beam / panel / TRP (or, the first PUSCH transmission opportunity), PTRS port 0 is associated with DMRS port 0, and PTRS port 1 is associated with DMRS port 1.

[0177] In addition, it may also mean that for the second beam / panel / TRP (or, the second PUSCH transmission opportunity), PTRS port 0 is associated with DMRS port 0, and PTRS port 1 is associated with DMRS port 2.

[0178] [Option 2-2]

[0179] For two beams / panels / TRPs, two PTRS-DMRS associations may also be indicated separately. For example, the base station may also indicate two PTRS-DMRS associations to the UE using the PTRS-DMRS association field included in the DCI. As an example, the PTRS-DMRS association field supported in Rel.17 may also be reused.

[0180] In the case of a maximum rank of 2 (maxRank=2) and using 1 PTRS port, the PTRS-DMRS association of 2 beams / panels / TRPs can also be indicated by the PTRS-DMRS association field (1 field). The MSB of the PTRS-DMRS association field can also correspond to the first beam / first panel / first TRP, and the LSB of the PTRS-DMRS association field can also correspond to the second beam / second panel / second TRP.

[0181] The method shown in Option 1-2 can also be applied to PTRS-DMRS association in the case where one PTRS (eg, PTRS port 0) is configured / applied.

[0182] In the case where the maximum rank is greater than 2 (maxRank>2) and 1 or 2 PTRS ports are utilized, the PTRS-DMRS association of 2 beams / panels / TRPs may also be indicated by a PTRS-DMRS association field and a second PTRS-DMRS association field (e.g., 2 fields). The PTRS-DMRS association field may also correspond to the first beam / first panel / first TRP, and the second PTRS-DMRS association field may also correspond to the second beam / second panel / second TRP.

[0183] The first / second beam / TRP may also refer to the first / second SRI field / TPMI field. In the case where 2 SRI fields / TPMI fields are reused and 2 SRI fields / TPMI fields correspond to 2 beams / panels / TRPs of FDM-B, the PTRS-DMRS association of Rel.17 may also be applied.

[0184] "change"

[0185] In case 2 PTRS-DMRS associations are indicated for 2 beams / panels / TRPs respectively, 2 PTRS-DMRS association fields may also be applied regardless of the number / value of the maximum rank. The PTRS-DMRS association of 2 beams / panels / TRPs may also be indicated by the PTRS-DMRS association field and the second PTRS-DMRS association field (2 fields), whether the maximum rank is 2 or greater. The PTRS-DMRS association field may also correspond to the first beam / first panel / first TRP, and the second PTRS-DMRS association field may also correspond to the second beam / second panel / second TRP.

[0186] Fig. 16 is a diagram showing an example of PTRS-DMRS association when two PTRSs (e.g., PTRS port 0, PTRS port 1) are set / applied. It shows that 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 are indicated by the PTRS-DMRS association field and the second PTRS-DMRS association field included in the DCI.

[0187] In Figure 16, the PTRS-DMRS association for the first beam / first panel / first TRP is indicated by the PTRS-DMRS association field included in the DCI (here, the MSB is 0 and the LSB is 0). In this case, in the first beam / first panel / first TRP, PTRS0 is associated with the first DMRS port of the shared PTRS port 0, and PTRS1 is associated with the first DMRS port of the shared PTRS port 1.

[0188] In addition, the PTRS-DMRS association for the second beam / second panel / second TRP is indicated by the second PTRS-DMRS association field included in the DCI (here, the MSB is 1 and the LSB is 1). In this case, in the second beam / second panel / second TRP, 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.

[0189] In addition, the correspondence between the DMRS port and the PUSCH antenna port can also be indicated to the UE through the first TPMI and the second TPMI respectively. Here, the first TPMI indicates that DMRS port 0 corresponds to PUSCH antenna port 1000, DMRS port 1 corresponds to PUSCH antenna port 1001, DMRS port 2 corresponds to PUSCH antenna port 1002, and DMRS port 3 corresponds to PUSCH antenna port 1003. In addition, the second TPMI indicates that DMRS port 0 corresponds to PUSCH antenna ports 1000 and 1002, DMRS port 1 corresponds to PUSCH antenna ports 1000 and 1002, DMRS port 2 corresponds to PUSCH antenna ports 1001 and 1003, and DMRS port 3 corresponds to PUSCH antenna ports 1001 and 1003.

[0190] 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 sharing PTRS port 0), and PTRS1 is associated with DMRS port 1 (the first DMRS port sharing PTRS port 1).

[0191] Furthermore, it means that in the second beam / second panel / second TRP, PTRS0 is associated with DMRS port 1 (the second DMRS port sharing PTRS port 0), and PTRS1 is associated with DMRS port 3 (the second DMRS port sharing PTRS port 1).

[0192] <Third Embodiment>

[0193] The third embodiment relates to the case where the SDM method (or SDM repetition) is configured for UL transmission. The term "configure" may be rewritten as "instruct", "apply", "activate", or "enable".

[0194] When the UE uses multiple (e.g., 2) beams / panels / TRPs for UL transmission (here, PUSCH), different layers / DMRS ports of one PUSCH (e.g., different layers / DMRS ports of one PUSCH) may be precoded separately and transmitted simultaneously from different UE panels (see FIG. 17 ). In the SDM method (or SDM repetition), one or two CWs (or TBs) may also be supported.

[0195] The UE may also control the transmission by using the layer / CW / repetition of the PUSCH associated with the first beam / panel / TRP and the layer / CW / repetition of the PUSCH associated with the second beam / panel / TRP.

[0196] Two beams / panels / TRPs may also have different DMRS ports. In the following description, it is assumed that two beams / panels / TRPs have different DMRS ports, but the present invention is not limited thereto. In addition, the same may be applied when three or more beams / panels / TRPs are used.

[0197] [Option 3-1]

[0198] In the case where 1 PTRS is set / applied (for example, PTRS port 0), 1 PTRS-DMRS association can also be indicated. DMRS ports across 2 beams / panels / TRPs can also be indicated (refer to Figure 18). For example, the base station can also use the PTRS-DMRS association field included in the DCI to indicate 1 PTRS-DMRS association to the UE. Regarding the DMRS port corresponding to PTRS port 0, the base station can also select from the DMRS ports across 2 beams / panels / TRPs and indicate it to the UE. As an example, the PTRS-DMRS association field supported in Rel.16 can also be reused.

[0199] FIG. 19 is a diagram showing an example of PTRS-DMRS association when one PTRS (eg, PTRS port 0) is set / applied. st Scheduled DMRSport) is indicated by the PTRS-DMRS association field (here, 0) included in the DCI. In this case, it may also mean that PTRS port 0 is associated with DMRS port 0 among DMRS ports 0-3 across 2 beams / panels / TRPs.

[0200] [Option 3-2]

[0201] In the case where two PTRS are set / applied (e.g., PTRS port 0 / port 1), PTRS port 0 / port 1 may also be set / applied for the first / second beam / panel / TRP, respectively. PTRS port 0 may also be associated with a DMRS port transmitted through the first beam / panel / TRP. PTRS port 1 may also be associated with a DMRS port transmitted through the second beam / panel / TRP.

[0202] 《Option 3-2-1》

[0203] In the case where PTRS port 0 / port 1 is applied for the first / second beam / panel / TRP, respectively, the association of 1 PTRS-DMRS may also be indicated. 2 beams / panels / TRPs may also share the same indication. For example, the UE may also apply information related to the association of PTRS-DMRS indicated from the base station (e.g., 1 PTRS-DMRS association field) for 2 beams / panels / TRPs.

[0204] FIG. 20 is a diagram showing an example of PTRS-DMRS association (eg, one PTRS-DMRS association field) indicated to a UE.

[0205] When the first value (for example, 0) is indicated by the PTRS-DMRS association field, it may also mean that the 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 the PTRS port 1 corresponding to the second beam / panel / TRP is associated with the first DMRS port (here, DMRS port 2) associated with the second beam / panel / TRP (refer to Figure 21).

[0206] When the second value (e.g., 1) is indicated by the PTRS-DMRS association field, it may also mean that the 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 also mean that the 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.

[0207] 《Option 3-2-2》

[0208] In case PTRS port 0 / port 1 is applied for the first / second beam / panel / TRP, respectively, the association of 2 PTRS-DMRSs may also be indicated for the 2 beams / panels / TRPs, respectively.

[0209] In this case, the association of PTRS-DMRS may also be indicated by one field (eg, one PTRS-DMRS association field) (option 3-2-2-1). Alternatively, the association of PTRS-DMRS may also be indicated by two fields (eg, two PTRS-DMRS association fields) (option 3-2-2-2).

[0210] [[Option 3-2-2-1]]

[0211] In the case where the association of PTRS-DMRS is indicated by 1 field, each beam / panel / TRP can also have a maximum of X layers (for example, X=2), the MSB of the field indicates the association of PTRS-DMRS for the first beam / panel / TRP, and the LSB of the field indicates the association of PTRS-DMRS for the second beam / panel / TRP.

[0212] FIG. 22 is a diagram showing an example of a PTRS-DMRS association indication (for example, one PTRS-DMRS association field) indicated to a UE.

[0213] The UE may also determine the DMRS port associated with PTRS port 0 and the DMRS port associated with PTRS port 1 based on the MSB and LSB of the PTRS-DMRS association field. For example, assume that the MSB of the PTRS-DMRS association field becomes 0 and the LSB becomes 1 (see FIG. 23 ).

[0214] In this case, it may also mean that the 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 the 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 (refer to Figure 23).

[0215] In addition, a structure (e.g., layer combination) in which the number of layers (e.g., the maximum number of layers) applied / set in each beam / panel / TRP is different may also be supported. For example, a structure 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 also be supported.

[0216] FIG. 24 is a diagram showing an example of a PTRS-DMRS association indication (for example, one PTRS-DMRS association field) in a case where the layer combination 1+3 is indicated / set.

[0217] In this case, the PTRS-DMRS association may also be indicated for the beam / panel / TRP that supports 3 layers (for example, the PTRS-DMRS association field), while the beam / panel / TRP that applies 1 layer may be set to not require PTRS-DMRS association (for example, based on an indication of the PTRS-DMRS association field).

[0218] The UE may also determine the DMRS port associated with the PTRS port of one party's beam / panel / TRP (eg, a beam / panel / TRP having 3 layers) based on the PTRS-DMRS association field.

[0219] For example, consider a case where the first DMRS port (here, 0) is indicated by the PTRS-DMRS association field (refer to FIG. 25). In this case, it may also mean that the PTRS port corresponding to the beam / panel / TRP of one party (for example, the first beam / panel / TRP having 3 layers) and the first DMRS port (here, DMRS port 0) associated with the beam / panel / TRP of the one party are associated.

[0220] In addition, regarding the other party's beam / panel / TRP (for example, a second beam / panel / TRP with 3 layers), the UE can also determine that a pre-defined / set PTRS1 is associated with a DMRS port 3.

[0221] [[Option 3-2-2-2]]

[0222] In the case where the PTRS-DMRS association is indicated using 2 fields (eg, 2 PTRS-DMRS association fields), the first field may also be associated with the first beam / panel / TRP, and the second field may also be associated with the second beam / panel / TRP.

[0223] When the PTRS-DMRS association is indicated by two fields, each beam / panel / TRP may have a maximum of X layers (eg, X=2), and each field may consist of Y bits (eg, Y=1).

[0224] Figure 26 is a diagram showing an example of a PTRS-DMRS association indication (e.g., 1 PTRS-DMRS association field) indicated to a UE. Here, the following fields are applied / set: a first field indicating a DMRS port associated with PTRS port 0 corresponding to a first beam / panel / TRP, and a second field indicating a DMRS port associated with PTRS port 1 corresponding to a second beam / panel / TRP.

[0225] The UE may also determine the DMRS port associated with the PTRS port 0 based on the first PTRS-DMRS association field, and determine the DMRS port associated with the PTRS port 1 based on the second PTRS-DMRS association field.

[0226] For example, it is assumed that the MSB of the PTRS-DMRS association field is 0 and the LSB is 1 (see FIG. 27 ).

[0227] In this case, it may also mean that the 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. In addition, it may also mean that the 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 (refer to Figure 27).

[0228] In addition, a structure (e.g., layer combination) in which the number of layers (e.g., the maximum number of layers) applied / set in each beam / panel / TRP is different may also be supported. For example, a structure 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 also be supported.

[0229] In this case, the structure can also be set as follows: the PTRS-DMRS association field corresponding to the beam / panel / TRP supporting 3 layers has 2 bits, and the PTRS-DMRS association field corresponding to the beam / panel / TRP supporting 1 layer becomes 0 bits (or, not included in the DCI).

[0230] FIG. 28 is a diagram showing an example of a PTRS-DMRS association indication (eg, a PTRS-DMRS association field corresponding to beams / panels / TRPs supporting 3 layers) in a case where a layer combination of 1+3 is indicated / set.

[0231] In this case, the PTRS-DMRS association can also be indicated for the beam / panel / TRP on the side supporting 3 layers (for example, the PTRS-DMRS association field), and the beam / panel / TRP on the side applying 1 layer can be set to not require PTRS-DMRS association (for example, the PTRS-DMRS association field).

[0232] The UE may also determine the DMRS port associated with the PTRS port of one party's beam / panel / TRP (eg, a beam / panel / TRP having 3 layers) based on the PTRS-DMRS association field.

[0233] For example, it is assumed that the first DMRS port (here, 0) is indicated by the PTRS-DMRS association field (refer to Figure 29). In this case, it can also mean that the PTRS port 0 corresponding to the beam / panel / TRP of one party (for example, the beam / panel / TRP having 3 layers) and the first DMRS port (here, DMRS port 0) associated with the beam / panel / TRP of the one party are associated.

[0234] [change]

[0235] In the existing system (for example, Rel. 16), it is defined that the DMRS ports transmitted through PUSCH antenna ports 1000 and 1002 share PTRS port 0, and the DMRS ports transmitted through PUSCH antenna ports 1001 and 1003 share PTRS port 1. In the case where one PTRS port is used for one beam / panel / TRP respectively, the indication of PTRS-DMRS association in Rel. 16 (for example, PTRS-DMRS association field) may be reused as follows.

[0236] In the case where SDM mode / SDM repetition is set / indicated and two PTRS ports are applied, PTRS port 0 / 1 can also be applied to the first / second beam / panel / TRP respectively. PTRS port 0 can also be associated with the DMRS port sent through the first beam / panel / TRP. PTRS port 1 can also be associated with the DMRS port sent through the second beam / panel / TRP.

[0237] Alternatively, the DMRS ports transmitted through PUSCH antenna ports 1000 and 1002 share PTRS port 0, and the DMRS ports transmitted through PUSCH antenna ports 1001 and 1003 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., the first beam / panel / TRP), and PUSCH antenna ports 1001 and 1003 are associated with one beam / panel / TRP (e.g., the second beam / panel / TRP). Alternatively, the DMRS ports associated with the first beam / panel / TRP share PTRS port 0, and the DMRS ports associated with the second beam / panel / TRP share PTRS port 1 (see FIG. 30).

[0238] As a result, even when supporting simultaneous transmission using multiple panels, fields supported in Rel.16 (eg, PTRS-DMRS association field) can be directly used.

[0239] In the SDM method / SDM repetition, the UE may also assume / expect that two PTRS ports are set. In other words, the UE may also always assume / expect that one PTRS port is applied to each beam / panel / TRP.

[0240] <Fourth Embodiment>

[0241] The fourth embodiment relates to single panel transmission (eg, single panel Tx) and dynamic switching between various schemes (eg, FDM-A scheme / FDM-B scheme / SDM scheme / SDM repetition).

[0242] [FDM-A method / FDM-B method]

[0243] Imagine single-panel transmission and dynamic switching between FDM-A and FDM-B.

[0244] In the case where single panel transmission is indicated, assuming that one PTRS-DMRS association field is indicated, the interpretation of the PTRS-DMRS association field for single panel transmission may also be in accordance with the association supported in Rel. 16. The association may also be rewritten as a table.

[0245] If it is assumed that two PTRS-DMRS association fields are indicated, at least one of the following Alt.1 to Alt.2 may be applied to single-panel transmission.

[0246] [[Alt.1]]

[0247] The first PTRS-DMRS association field may also be applied. The interpretation of the field may also be in accordance with the association supported in Rel.16. The association may also be rewritten as a table. The second PTRS-DMRS association field may also be ignored.

[0248] [[Alt.2]]

[0249] The PTRS-DMRS association field corresponding to the panel indicated for single panel transmission may also be applied. The interpretation of the field may also be in accordance with the association supported in Rel.16. The association may also be rewritten as a table. Other PTRS-DMRS association fields may also be ignored. In addition, the first / second PTRS-DMRS association fields may also correspond to the first / second panel, respectively.

[0250] [SDM method / SDM repetition]

[0251] It is assumed that the single-panel transmission and the dynamic switching between the SDM mode / SDM repetition are used. When two PTRS ports are configured, at least one of the following options 4-1 and 4-2 can also be applied.

[0252] 《Option 4-1》

[0253] In the case where single panel transmission is indicated and the use of two PTRS ports is supported, if it is assumed that one PTRS-DMRS association field is indicated, the interpretation of the PTRS-DMRS association field for single panel transmission can also be based on the association of two PTRS ports supported in Rel. 16. The association can also be rewritten as a table.

[0254] When single-panel transmission is indicated and the use of two PTRS ports is supported, assuming that two PTRS-DMRS association fields are indicated, at least one of the following Alt. 1 to Alt. 2 may be applied to single-panel transmission.

[0255] [[Alt.1]]

[0256] The first PTRS-DMRS association field may also be applied. The interpretation of the field may also be in accordance with the association of two PTRS ports supported in Rel.16. The second PTRS-DMRS association field may also be ignored. The association may also be rewritten as a table.

[0257] [[Alt.2]]

[0258] The PTRS-DMRS association field corresponding to the panel indicated for single panel transmission may also be applied. The interpretation of the field may also be in accordance with the association of two PTRS ports supported in Rel.16. The association may also be rewritten as a table. Other PTRS-DMRS association fields may also be ignored. In addition, the first / second PTRS-DMRS association fields may also correspond to the first / second panel, respectively.

[0259] 《Option 4-2》

[0260] In the case where single panel transmission is indicated and the use of 1 PTRS port is supported, if it is assumed that 1 PTRS-DMRS association field is indicated, the interpretation of the PTRS-DMRS association field for single panel transmission can also be based on the association of 1 PTRS port supported in Rel. 16. The association can also be rewritten as a table.

[0261] When single-panel transmission is indicated and the use of one PTRS port is supported, assuming that two PTRS-DMRS association fields are indicated, at least one of the following Alt. 1 to Alt. 2 may be applied to single-panel transmission.

[0262] [[Alt.1]]

[0263] The first PTRS-DMRS association field may also be applied. The interpretation of the field may also be in accordance with the association of one PTRS port supported in Rel.16. The association may also be rewritten as a table. The second PTRS-DMRS association field may also be ignored.

[0264] [[Alt.2]]

[0265] The PTRS-DMRS association field corresponding to the panel indicated for single panel transmission may also be applied. The interpretation of the field may also be in accordance with the association of one PTRS port supported in Rel.16. The association may also be rewritten as a table. Other PTRS-DMRS association fields may also be ignored. In addition, the first / second PTRS-DMRS association fields may also correspond to the first / second panel, respectively.

[0266] <Changes>

[0267] In the first to fourth embodiments, "1 PTRS" may not be allowed / supported. For example, when the base station sets the FDM-A mode / FDM-B mode / SDM mode / SDM repetition of STxMP PUSCH based on a single DCI, only 2 (or more than 2) PTRS may be set in a specific frequency range (for example, FR2).

[0268] "1 PTRS port" may also mean that the PTRS is sent to any TRP (e.g., the first TRP#1) (refer to FIG. 31A). In this case, other TRPs (e.g., TRP#2 that has not received the PTRS) may also determine / obtain phase noise (e.g., phase noise) based on specific rules. FIG. 31A shows a case where the UE sends 1 PTRS#1. FIG. 31B shows a case where the UE sends 2 PTRS#1 and #2.

[0269] For example, TRP#1 may also send / notify phase noise information (or PTRS measurement results) to TRP#2 (see FIG31A ). The transmission / notification from TRP#1 to TRP#2 may also utilize fronthaul / midhaul / backhaul, X2 link, etc. In this case, since the power amplifier (PA) is common across different UE panels, it can also be imagined that the phase noise is common across the two PUSCHs for different TRPs.

[0270] The UE may report either the UE's panel estimate such that the PA is common for PUSCHs for different panels / TRPs (eg, the same PTRS may be used for both PUSCHs), or the number of PTRS ports (eg, {2, 1, and 2}).

[0271] <Supplement>

[0272] In the first to fourth embodiments, the FDM-A mode / FDM-B mode / SDM mode / SDM repetition may also be indicated / set by at least one of the following: a high-level parameter indicating a transmission mode (for example, a transmission scheme), a DCI indicating a transmission mode, a DCI indicating two beams (SRI / TCI status) / panels, a DCI indicating two SRI fields / TCI fields, the setting of two CB / NCB SRS resource sets, and a DCI indicating two or more DCM groups for the SDM mode.

[0273] Single-panel transmission can also be indicated / set by at least one of the following: high-level parameters / DCI that do not enable any StxMP transmission method, DCI indicating 1 beam (SRI / TCI status) / panel, DCI indicating 1 SRI field / TCI field, and CB / NCB SRS resource set setting.

[0274] At least one of the above-mentioned implementation modes may also be applied only to a UE that reports a specific UE capability (UE capability) or supports the specific UE capability.

[0275] The specific UE capability may also represent at least one of the following:

[0276] ・Supporting specific processing / operation / control / information related to at least one of the above embodiments (e.g., ...),

[0277] ・Support FDM-A method,

[0278] ・Support FDM-B method,

[0279] ・Support SDM method,

[0280] ・Supports SDM repetition.

[0281] In addition, the above-mentioned specific UE capabilities can be capabilities that are applied across all frequencies (commonly regardless of frequency), or capabilities for each frequency (for example, 1 of a cell, a band, a band combination, a BWP, a component carrier, etc., or a combination thereof), or capabilities for each frequency range (for example, frequency range (Frequency Range) 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), or capabilities for each subcarrier spacing (SubCarrier Spacing (SCS)), or capabilities for each feature set (Feature Set (FS)) or feature set per component carrier (Feature Set Per Component-carrier (FSPC)).

[0282] Furthermore, the specific UE capability may be a capability applied across all duplex modes (commonly regardless of the duplex mode) or a capability for each duplex mode (eg, time division duplex (TDD) or frequency division duplex (FDD)).

[0283] Furthermore, at least one of the above-mentioned embodiments may be applied when specific information associated with the above-mentioned embodiments is set to the UE through higher layer signaling.

[0284] When the UE does not support at least one of the above-mentioned specific UE capabilities or is not configured with the above-mentioned specific information, for example, the operations of Rel.15 / 16 / 17 may also be applied.

[0285] (Note)

[0286] The following inventions are added to one embodiment of the present disclosure.

[0287] [Note 1]

[0288] A terminal comprises: a receiving unit for receiving information related to a transmission method of an uplink shared channel (PUSCH) transmitted using multiple beams, panels and at least one of a transmission and reception point, and downlink control information including information indicating an association between an uplink phase tracking reference signal (PTRS) and a demodulation reference signal (DMRS) for the PUSCH; and a control unit for determining an association between a port of the PTRS and a port of the DMRS based on the transmission method applied to the PUSCH, the downlink control information, and the number of ports of the applied PTRS.

[0289] [Note 2]

[0290] A terminal as described in Appendix 1, wherein:

[0291] When the transmission method applied to the PUSCH is frequency division multiplexing or space division multiplexing, the control unit commonly applies the association between the port of the PTRS and the port of the DMRS for at least one of the multiple beams, panels and transmitting and receiving points.

[0292] [Note 3]

[0293] A terminal as described in Supplement 1 or Supplement 2, wherein:

[0294] When the transmission method applied to the PUSCH is frequency division multiplexing or space division multiplexing, the control unit applies the association between the port of the PTRS and the port of the DMRS respectively for at least one of the multiple beams, panels and transmitting and receiving points.

[0295] [Note 4]

[0296] A terminal as described in any one of Notes 1 to 3, wherein:

[0297] The control unit determines, based on a field included in the downlink control information, an association between a port of the PTRS and a port of the DMRS for at least one of a plurality of beams, panels, and transmission / reception points.

[0298] (Wireless Communication System)

[0299] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0300] 32 is a diagram showing an example of a schematic structure of a wireless communication system according to an embodiment. The wireless communication system 1 (may also be simply referred to as the system 1) may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), or the like.

[0301] In addition, the wireless communication system 1 may also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC may also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (E-UTRA-NR Dual Connectivity (EN-DC))), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

[0302] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (Secondary Node (SN)). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0303] The wireless communication system 1 may also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0304] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The configuration and number of each cell and user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as base stations 10.

[0305] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0306] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also be equivalent to a frequency band higher than FR2.

[0307] Furthermore, the user terminal 20 may perform communication using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0308] Multiple base stations 10 may also be connected by wire (e.g., optical fiber based on Common Public Radio Interface (CPRI), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to a relay station (relay) may also be referred to as an IAB node.

[0309] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0310] The core network 30 may also include, for example, user plane functions (User Plane Function (UPF)), access and mobility management function (Access and Mobility management Function (AMF)), session management function (Session Management Function (SMF)), unified data management (Unified Data Management (UDM)), application function (Application Function (AF)), data network (Data Network (DN)), location management function (Location Management Function (LMF)), maintenance and operation management (Operation, Administration and Maintenance (OAM)) and other network functions (Network Functions (NF)). In addition, multiple functions can also be provided by one network node. In addition, communication with an external network (for example, the Internet) can also be carried out via the DN.

[0311] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0312] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UL), 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.

[0313] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the radio access schemes for UL and DL.

[0314] As downlink channels, the wireless communication system 1 may use a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20 , a broadcast channel (Physical Broadcast Channel (PBCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc.

[0315] In addition, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. can also be used in the wireless communication system 1.

[0316] User data, high-layer control information, System Information Block (SIB), etc. are transmitted through PDSCH. User data, high-layer control information, etc. can also be transmitted through PUSCH. In addition, Master Information Block (MIB) can also be transmitted through PBCH.

[0317] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0318] In addition, the DCI for scheduling the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be rewritten as DL data, and the PUSCH may also be rewritten as UL data.

[0319] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space setting.

[0320] A search space may also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be rewritten mutually.

[0321] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted through PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted through PRACH.

[0322] In addition, in the present disclosure, downlink, uplink, etc. may be expressed without the word “link.” In addition, various channels may be expressed without the word “physical” at the beginning.

[0323] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As DL-RS, in the wireless communication system 1, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0324] 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 also be referred to as SS / PBCH block, SS block (SS Block (SSB)), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0325] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. may also be transmitted. In addition, DMRS may also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0326] (Base Station)

[0327] 33 is a diagram showing an example of a structure of a base station involved in one embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may each be provided with more than one.

[0328] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0329] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0330] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0331] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0332] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0333] The transmitting / receiving antenna 130 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0334] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0335] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0336] The sending and receiving unit 120 (sending processing unit 1211), for example, may also perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 110, to generate a bit string to be sent.

[0337] The transmitting and receiving unit 120 (transmitting processing unit 1211) may also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), discrete Fourier transform (DFT) processing (as needed), inverse fast Fourier transform (IFFT) processing), precoding, digital-to-analog conversion and other transmission processing on the bit string to be transmitted, and output a baseband signal.

[0338] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0339] On the other hand, the transmission and reception unit 120 (RF unit 122 ) may also perform amplification, filter processing, demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmission and reception antenna 130 .

[0340] The transmitting and receiving unit 120 (receiving processing unit 1212) may also apply receiving processing such as analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to obtain user data, etc.

[0341] The transmitting and receiving unit 120 (the measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (RRM) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., reference signal received power (RSRP)), received quality (e.g., reference signal received quality (RSRQ), signal to interference plus noise ratio (SINR), signal to noise ratio (SNR)), signal strength (e.g., received signal strength indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0342] The transmission path interface 140 can also send and receive signals (return signaling) between the devices included in the core network 30 (for example, the network node providing NF), other base stations 10, etc., and acquire and transmit user data (user plane data) and control plane data for the user terminal 20.

[0343] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission and reception unit 120 , the transmission and reception antenna 130 , and the transmission path interface 140 .

[0344] In addition, the transmitting and receiving unit 120 may also transmit: information related to the transmission method of an uplink shared channel (PUSCH) transmitted using multiple beams, panels, and at least one of the transmitting and receiving points, and downlink control information including information indicating the association between an uplink phase tracking reference signal (PTRS) and a demodulation reference signal (DMRS) for PUSCH.

[0345] The control unit 110 may also control to indicate the association between the PTRS port and the DMRS port based on the transmission mode applied to the PUSCH, the downlink control information, and the number of the applied PTRS ports.

[0346] (User terminal)

[0347] 34 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. In addition, the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may each be provided with more than one.

[0348] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0349] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0350] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 220.

[0351] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are explained based on the common knowledge in the technical field involved in the present disclosure.

[0352] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured as a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0353] The transmitting / receiving antenna 230 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0354] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0355] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0356] The sending and receiving unit 220 (sending processing unit 2211) may also perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0357] The transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be transmitted, and output a baseband signal.

[0358] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is valid (enabled), the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing without performing DFT processing.

[0359] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0360] On the other hand, the transmission and reception unit 220 (RF unit 222 ) may perform amplification, filter processing, demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmission and reception antenna 230 .

[0361] The sending and receiving unit 220 (receiving processing unit 2212) can also apply receiving processing such as analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0362] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurement, CSI measurement, etc. based on the received signal. The measuring unit 223 may also measure the received power (e.g., RSRP), the received quality (e.g., RSRQ, SINR, SNR), the signal strength (e.g., RSSI), the propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

[0363] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0364] The transmitting and receiving unit 220 may also receive information related to a transmission method of an uplink shared channel (PUSCH) transmitted using multiple beams, panels, and at least one transmitting and receiving point, and downlink control information including information indicating an association between an uplink phase tracking reference signal (PTRS) and a demodulation reference signal (DMRS) for the PUSCH.

[0365] The control unit 210 may also determine the association between the PTRS port and the DMRS port based on the transmission mode applied to the PUSCH, the downlink control information, and the number of the applied PTRS ports.

[0366] When the transmission method applied to PUSCH is frequency division multiplexing or space division multiplexing, the control unit 210 may also commonly apply the association between the PTRS port and the DMRS port for at least one of multiple beams, panels, and transmitting and receiving points.

[0367] When the transmission method applied to PUSCH is frequency division multiplexing or space division multiplexing, the control unit 210 may also apply the association between the PTRS port and the DMRS port separately for at least one of multiple beams, panels and transmitting and receiving points.

[0368] The control unit 210 may also determine the association between the PTRS port and the DMRS port for at least one of the multiple beams, panels, and transmission / reception points based on one field included in the downlink control information.

[0369] (Hardware structure)

[0370] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more physically or logically separated devices can be directly or indirectly connected (for example, by wire, wireless, etc.) and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0371] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method thereof is not particularly limited.

[0372] For example, the base station, user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. FIG35 is a diagram showing an example of the hardware structure of a base station and a user terminal involved in one embodiment. The above-mentioned base station 10 and user terminal 20 may also 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.

[0373] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, and unit can be interchanged. The hardware structure of the base station 10 and the user terminal 20 may include one or more of the devices shown in the figure, or may exclude some of the devices.

[0374] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or in other ways. In addition, the processor 1001 may also be implemented by one or more chips.

[0375] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0376] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), the transmission and reception unit 120 (220), etc. may also be implemented by the processor 1001.

[0377] In addition, the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that causes a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the other functional blocks can also be implemented in the same way.

[0378] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0379] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray (Blu-ray) (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other suitable storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0380] The communication device 1004 is hardware (transmitting and 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, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. may also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) may also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0381] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that performs output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0382] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0383] In addition, the base station 10 and the user terminal 20 may also 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 the hardware may be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0384] (Variation)

[0385] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, channels, code elements, and signals (signals or signaling) may be rewritten one another. In addition, a signal may also be a message. A reference signal may also be referred to as RS, and may also be referred to as a pilot, a pilot signal, etc. depending on the applied standard. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0386] A radio frame may also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) constituting a radio frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is not dependent on a parameter set (numerology).

[0387] Here, the parameter set may also be a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of the subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, wireless frame structure, specific filter processing performed by the transmitter and receiver in the frequency domain, specific windowing processing performed by the transmitter and receiver in the time domain, etc.

[0388] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0389] A time slot may also include multiple mini time slots. Each mini time slot may also be composed of one or more symbols in the time domain. In addition, a mini time slot may also be referred to as a sub-time slot. A mini time slot may also be composed of a smaller number of symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini time slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini time slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0390] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective names. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be replaced with each other.

[0391] For example, a subframe may be referred to as a TTI, a plurality of consecutive subframes may be referred to as a TTI, and a time slot or a mini time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0392] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited to this.

[0393] TTI can also be a transmission time unit for a data packet (transport block), code block, code word, etc. that has been channel-coded, and can also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is given, the time interval (for example, the number of symbols) to which a transport block, code block, code word, etc. is actually mapped can also be shorter than the TTI.

[0394] In addition, when a time slot or a mini time slot is called a TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) may also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling may also be controlled.

[0395] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0396] In addition, a long TTI (eg, normal TTI, subframe, etc.) may be rewritten as a TTI having a time length exceeding 1 ms, and a short TTI (eg, shortened TTI, etc.) may be rewritten as a TTI having a TTI length shorter than that of a long TTI and longer than 1 ms.

[0397] Resource Block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, it may be 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0398] In addition, an RB may include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks, respectively.

[0399] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0400] In addition, a resource block may be composed of one or more resource elements (RE). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0401] Bandwidth Part (BWP) (also referred to as partial bandwidth, etc.) can also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, common RBs can also be identified by the index of the RB based on the common reference point of the carrier. PRBs can also be defined in a BWP and numbered within the BWP.

[0402] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0403] At least one of the set BWPs may also be activated, and the UE may not assume that it will send or receive a specific signal / channel outside the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be rewritten as "BWP".

[0404] In addition, the above-mentioned structures such as radio frames, subframes, time slots, mini-time slots and symbols are only examples. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

[0405] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0406] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0407] Information, signals, etc. described in the present disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0408] In addition, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0409] The input and output information, signals, etc. may be stored in a specific location (e.g., a memory), or may be managed using a management table. The input and output information, signals, etc. may be overwritten, updated, or added. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0410] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0411] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (Layer 1 / Layer 2 (L1 / L2)) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, such as an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC control element (MACControl Element (CE)).

[0412] In addition, notification of specific information (for example, notification of "it is X") is not limited to explicit notification, and may also be performed implicitly (for example, by not notifying the specific information, or by notifying other information).

[0413] The determination may be made using a value represented by one bit (0 or 1), a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(eg, comparison with a specific value).

[0414] Whether software is called software, firmware, middle-ware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software module, application, software application, software package, routine, sub-routine, object, executable files, execution thread, procedure, function, etc.

[0415] In addition, software, instructions, information, etc. may also be sent and received via a transmission medium. For example, when the software is sent from a website, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0416] The terms "system" and "network" used in the present disclosure can be used interchangeably. "Network" may also refer to a device (eg, a base station) included in the network.

[0417] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL))", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission 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" can be used interchangeably.

[0418] In the present 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" can be used interchangeably. There are also cases where the base station is referred to by terms such as macro cell, small cell, femto cell, and pico cell.

[0419] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0420] In the present disclosure, "a base station sends information to a terminal" may be replaced with "the base station instructs the terminal to control / operate based on the information".

[0421] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0422] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client or several other appropriate terms.

[0423] At least one of the base station and the mobile station may also be referred to as a transmission device, a reception device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may be a device mounted on a moving object, a moving object body, etc.

[0424] The mobile body refers to a movable object, and the moving speed is arbitrary, including the case where the mobile body stops. The mobile body includes, for example, vehicles, transport vehicles, cars, automatic two-wheeled vehicles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, trailers, rickshaws, ships (ships and other watercrafts), airplanes, rockets, artificial satellites, drones, multi-rotor aircraft, quadcopters, balloons, and objects carried on them, but is not limited to these. In addition, the mobile body can also be a mobile body that moves autonomously based on operating instructions.

[0425] The mobile object may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile object that moves unmanned (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move when performing communication operations. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0426] 36 is a diagram showing an example of a vehicle according to an embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0427] The driving unit 41 is composed of at least one of an engine, a motor, or a combination of an engine and a motor. The steering unit 42 is composed of at least a steering wheel (also referred to as a steering wheel), and steers at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by a user.

[0428] The electronic control unit 49 may also be composed of a microprocessor 61, a memory (ROM, RAM) 62, and a communication port (for example, an input / output (IO) port) 63. Signals from various sensors 50-58 provided in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be referred to as an ECU (Electronic Control Unit).

[0429] The signals from the various sensors 50-58 include a current signal from a current sensor 50 for sensing the current of the motor, a speed signal of the front wheels 46 / rear wheels 47 obtained by a speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal of the accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of the shift lever 45 obtained by a shift lever sensor 57, a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58, and the like.

[0430] The information service unit 59 is composed of various devices such as a car navigation system, an audio system, a speaker, a display, a television, and a radio for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 provides various information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40 using information obtained from an external device via the communication module 60 or the like.

[0431] The information service unit 59 may include input devices for accepting input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.), and may also include output devices for implementing output to the outside (e.g., display, speaker, LED light, touch panel, etc.).

[0432] The driving assistance system unit 64 is composed of various devices for providing functions for preventing accidents or reducing the driving load of the driver, such as millimeter wave radar, light detection and ranging (LiDAR), camera, positioning device (for example, Global Navigation Satellite System (GNSS)), map information (for example, high-precision (High Definition (HD)) map, autonomous vehicle (Autonomous Vehicle (AV)) map, etc.), gyroscope system (for example, inertial measurement unit (Inertial Measurement Unit (IMU))), inertial navigation unit (Inertial Navigation System (INS))), artificial intelligence (Artificial Intelligence (AI)) chip, AI processor, and one or more ECUs that control these devices. In addition, the driving assistance system unit 64 sends and receives various information via the communication module 60 and realizes the driving assistance function or the autonomous driving function.

[0433] The communication module 60 can communicate with the microprocessor 61 and the components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) between the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, the microprocessor 61 and the memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58 provided in the vehicle 40 via the communication port 63.

[0434] The communication module 60 can be controlled by the microprocessor 61 of the electronic control unit 49, and is a communication device that can communicate with an external device. For example, various information is sent and received with the external device via wireless communication. The communication module 60 can be located either inside or outside the electronic control unit 49. The external device can also be, for example, the above-mentioned base station 10, user terminal 20, etc. In addition, the communication module 60 can also be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (it can also function as at least one of the base station 10 and user terminal 20).

[0435] The communication module 60 may also transmit at least one of the signals from the various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may also be referred to as an input unit that receives input. For example, the PUSCH transmitted through the communication module 60 may also include information based on the above input.

[0436] The communication module 60 receives various information (traffic information, signal information, vehicle-to-vehicle information, etc.) transmitted from an external device, and displays it to the information service unit 59 provided in the vehicle. The information service unit 59 may also be referred to as an output unit for outputting information (for example, outputting information to a display, a speaker, etc. based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0437] In addition, the communication module 60 stores various information received from the external device in the memory 62 that can be used by the microprocessor 61. The microprocessor 61 can also control the drive unit 41, the steering unit 42, the accelerator pedal 43, the brake pedal 44, the shift lever 45, the left and right front wheels 46, the left and right rear wheels 47, the axle 48, the various sensors 50-58, etc., which are provided in the vehicle 40 based on the information stored in the memory 62.

[0438] In addition, the base station in the present disclosure may also be rewritten as a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is rewritten as communication between multiple user terminals (for example, it may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be set as a structure in which the user terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be rewritten as terms corresponding to communication between terminals (for example, "sidelink"). For example, uplink channels, downlink channels, etc. may also be rewritten as sidelink channels.

[0439] Likewise, the user terminal in the present disclosure may be rewritten as a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0440] In the present disclosure, operations are assumed to be performed by a base station, and sometimes by its upper node depending on the situation. Obviously, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by a base station, one or more network nodes other than the base station (for example, Mobility Management Entity (MME)), Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0441] The various methods / implementations described in this disclosure may be used individually or in combination, and may be used in a switched manner as the method is executed. In addition, the processing procedures, timings, flow charts, etc. of the various methods / implementations described in this disclosure may be swapped in order as long as they are not contradictory. For example, for the methods described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0442] The various modes / implementations described in the present disclosure may be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or a 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 (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems that are expanded, modified, created, or specified based on them. In addition, multiple systems can also be combined (for example, LTE or LTE-A, combination with 5G, etc.) for application.

[0443] The phrase “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on”.

[0444] Any reference to an element using the terms "first", "second", etc. used in the present disclosure does not fully define the amount or order of these elements. These terms can be used in the present disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to the first and second elements does not mean that only two elements can be used or that the first element must take precedence over the second element in some form.

[0445] The term "determining" used in the present disclosure may include a variety of operations. For example, "determining" may also refer to situations where judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc. are regarded as performing "determining".

[0446] In addition, "judgment (decision)" may also be a situation where receiving (e.g., receiving information), transmitting (e.g., sending information), input (input), output (output), accessing (e.g., accessing data in a memory), etc. are regarded as making a "judgment (decision)".

[0447] In addition, "judgment (decision)" can also refer to situations where resolving, selecting, choosing, establishing, comparing, etc. are regarded as "judgment (decision)". That is, "judgment (decision)" can also refer to situations where some actions are regarded as "judgment (decision)".

[0448] In addition, "judgment (decision)" can also be rewritten as "assuming (assuming)", "expecting (expecting)", "considering (considering)" and so on.

[0449] The "maximum transmit power" recorded in the present disclosure may refer to the maximum value of the transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated UE maximum transmit power).

[0450] The terms "connected", "coupled", or all their variations used in this disclosure refer to all direct or indirect connections or combinations between two or more elements, and may include the situation where one or more intermediate elements exist between two elements that are "connected" or "coupled" to each other. The combination or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may also be rewritten as "access".

[0451] In the present disclosure, when two elements are connected, it is possible to consider being "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0452] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate", "combined" and the like may also be interpreted in the same manner as "different".

[0453] When the terms "include", "including", and variations thereof are used in the present disclosure, these terms, like the term "comprising", have an inclusive meaning. Furthermore, the term "or" used in the present disclosure does not mean an exclusive OR.

[0454] In the present disclosure, when an article is added by translation like a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0455] In the present disclosure, "below", "less than", "above", "more than", "equal to", etc. may also be rephrased with each other. Furthermore, in the present disclosure, words meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. may also be rephrased with each other without being limited to the original form, comparative form, and superlative form. Furthermore, in the present disclosure, words meaning "good", "bad", "big", "small", "high", "low", "early", "late", "wide", "narrow", etc. may also be rephrased with each other as expressions attached with "ith" (i is an arbitrary integer) without being limited to the original form, comparative form, and superlative form (for example, "highest" may also be rephrased with "i-th highest").

[0456] In the present disclosure, “of,” “for,” “regarding,” “related to,” “associated with,” etc. may also be rephrased.

[0457] The invention involved in the present disclosure has been described in detail above, but it is obvious to those skilled in the art that the invention involved in the present disclosure is not limited to the embodiments described in the present disclosure. The invention involved in the present disclosure can be implemented as a modified and altered mode without departing from the gist and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for the purpose of illustrative description and does not have any limiting meaning on the invention involved in the present disclosure.< / ptrs>

Claims

1. A terminal having: a receiving unit that receives information related to a transmission method of an uplink shared channel (PUSCH) transmitted using at least one of a plurality of beams, panels, and transmission / reception points, and downlink control information including information indicating an association between an uplink phase tracking reference signal (PTRS) and a demodulation reference signal (DMRS) for the PUSCH; and The control unit determines the association between the port of the PTRS and the port of the DMRS based on the transmission mode applied to the PUSCH, the downlink control information, and the number of ports of the applied PTRS.

2. The terminal according to claim 1, wherein: When the transmission method applied to the PUSCH is frequency division multiplexing or space division multiplexing, the control unit commonly applies the association between the port of the PTRS and the port of the DMRS for at least one of the multiple beams, panels and transmitting and receiving points.

3. The terminal according to claim 1, wherein: When the transmission method applied to the PUSCH is frequency division multiplexing or space division multiplexing, the control unit applies the association between the port of the PTRS and the port of the DMRS respectively for at least one of the multiple beams, panels and transmitting and receiving points.

4. The terminal according to claim 1, wherein: The control unit determines, based on a field included in the downlink control information, an association between a port of the PTRS and a port of the DMRS for at least one of a plurality of beams, panels, and transmission / reception points.

5. A wireless communication method, which is a wireless communication method of a terminal, comprising: The step of receiving information related to a transmission method of an uplink shared channel (PUSCH) transmitted using at least one of a plurality of beams, panels, and transmission / reception points, and downlink control information including information indicating an association between an uplink phase tracking reference signal (PTRS) and a demodulation reference signal (DMRS) for the PUSCH; and A step of determining association between the PTRS port and the DMRS port based on the transmission method applied to the PUSCH, the downlink control information, and the number of applied PTRS ports.

6. A base station, comprising: a transmitting unit that transmits information related to a transmission method of an uplink shared channel (PUSCH) transmitted using at least one of a plurality of beams, panels, and transmission / reception points, and downlink control information including information indicating an association between an uplink phase tracking reference signal (PTRS) and a demodulation reference signal (DMRS) for the PUSCH; and The control unit controls to indicate association between the PTRS port and the DMRS port based on the transmission mode applied to the PUSCH, the downlink control information, and the number of ports of the applied PTRS.

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