Terminal, wireless communication method, and base station

Abstract

The present invention provides a terminal, a wireless communication method, and a base station that appropriately control UL transmission even when UL transmission is possible to one or more candidate cells. [Solution] In a next-generation mobile communication system, a user terminal has a control unit that allocates power to multiple uplinks (ULs) based on priority when the total transmission power exceeds a certain value, and a transmission unit that transmits the multiple ULs, wherein the physical random access channel (PRACH) transmission on candidate cells other than the primary cell (PCell) and serving cell is set to the same or lower priority as the serving cell.

Description

[Technical Field]

[0001] This disclosure relates to terminals, wireless communication methods, and base stations in next-generation mobile communication systems. [Background technology]

[0002] Long Term Evolution (LTE) was specified for Universal Mobile Telecommunications System (UMTS) networks with the aim of achieving even higher data rates and lower latency (Non-Patent Literature 1). Furthermore, LTE-Advanced (3GPP Rel.10-14) was specified for the aim of further increasing capacity and sophistication of LTE (Third Generation Partnership Project (3GPP®) Release (Rel.) 8, 9).

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

[0004] [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 [Overview of the project] [Problems that the invention aims to solve]

[0005] Future wireless communication systems (e.g., wireless communication systems beyond Rel.16 / 5G) are expected to control communication based on inter-cell mobility, including non-serving cells (e.g., candidate cells), or inter-cell mobility utilizing multiple transmit / receive points (e.g., Multi-TRP (MTRP)).

[0006] However, when UL transmission is possible to one or more candidate cells, the question arises as to how to control UL transmission. If UL transmission to one or more candidate cells is not properly controlled, the quality of communication using multiple transmit / receive points may deteriorate.

[0007] This disclosure is made in view of the foregoing, and one of its objectives is to provide a terminal, a wireless communication method, and a base station that can appropriately control UL transmission even when UL transmission is possible to one or more candidate cells. [Means for solving the problem]

[0008] A terminal according to one aspect of the present disclosure includes a control unit that allocates power to a plurality of uplinks (ULs) based on priority when the total transmit power exceeds a certain value, and a transmission unit that transmits the plurality of ULs, characterized in that, among the plurality of ULs, physical random access channel (PRACH) transmissions on candidate cells other than the primary cell (PCell) and serving cell are given the same or lower priority as the serving cell. [Effects of the Invention]

[0009] According to one aspect of this disclosure, UL transmission can be appropriately controlled even when UL transmission is possible for one or more candidate cells. [Brief explanation of the drawing]

[0010] [Figure 1] FIG. 1A is a diagram showing an example of the movement of a UE in Rel. 17. FIG. 1B is a diagram showing an example of the movement of a UE in Rel. 18. [Figure 2] FIG. 2 is a diagram showing an example of associating a serving cell and a candidate cell. [Figure 3] FIG. 3A is a diagram showing a second example of Option 2 for candidate cell configuration. FIG. 3B is a diagram showing a third example of Option 2 for candidate cell configuration. [Figure 4] FIG. 4 is a diagram showing Serving Cell Switching Example 1. [Figure 5] FIG. 5 is a diagram showing Serving Cell Switching Example 2. [Figure 6] FIG. 6 is a diagram showing Serving Cell Switching Example 3. [Figure 7] FIG. 7 is a flowchart showing an example of the processing of the first embodiment. [Figure 8] FIG. 8 is a diagram showing an example of the schematic configuration of a wireless communication system according to an embodiment. [Figure 9] FIG. 9 is a diagram showing an example of the configuration of a base station according to an embodiment. [Figure 10] FIG. 10 is a diagram showing an example of the configuration of a user terminal according to an embodiment. [Figure 11] FIG. 图11 is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment. [Figure 12] FIG. 12 is a diagram showing an example of a vehicle according to an embodiment.

MODE FOR CARRYING OUT THE INVENTION

[0011] (TCI, Spatial Relationship, QCL) In NR, it is considered to control at least one of signal and channel (expressed as signal / channel) in a UE, such as at least one of reception processing (e.g., reception, demapping, demodulation, decoding), transmission processing (e.g., transmission, mapping, precoding, modulation, encoding) based on a Transmission Configuration Indication state (TCI state).

[0012] The TCI state may represent what is applied to the downlink signal / channel. What corresponds to the TCI state applied to the uplink signal / channel may be expressed as a spatial relation.

[0013] The TCI state is information regarding Quasi-Co-Location (QCL) of a signal / channel, and may be called a spatial reception parameter, Spatial Relation Information, etc. The TCI state may be set for each channel or each signal in a UE.

[0014] QCL is an index indicating the statistical properties of a signal / channel. For example, when a certain signal / channel and another signal / channel are in a QCL relationship, it may mean that at least one of Doppler shift, Doppler spread, average delay, delay spread, spatial parameter (e.g., spatial Rx parameter) is the same (QCL for at least one of these) among these different signals / channels.

[0015] The spatial reception parameters may correspond to the UE's received beam (e.g., the received analog beam), and the beam may be identified based on the spatial QCL. In this disclosure, QCL (or at least one element of QCL) may be interpreted as sQCL (spatial QCL).

[0016] QCL may have multiple types (QCL types). For example, there may be four QCL types A and D that differ in the parameters (or parameter sets) that can be assumed to be the same, and these parameters (which may also be called QCL parameters) are shown below: • QCL Type A (QCL-A): Doppler shift, Doppler spread, mean delay and delay spread, • QCL Type B (QCL-B): Doppler shift and Doppler spread, • QCL Type C (QCL-C): Doppler shift and mean delay, • QCL Type D (QCL-D): Spatial reception parameters.

[0017] The assumption by the UE that one control resource set (CORESET), channel, or reference signal is in a specific QCL (e.g., QCL type D) relationship with another CORESET, channel, or reference signal may be called a QCL assumption.

[0018] The UE may determine at least one of the transmit beam (Tx beam) and receive beam (Rx beam) of a signal / channel based on the TCI state or QCL assumption of the signal / channel.

[0019] The TCI state may, for example, be information regarding the QCL between the target channel (in other words, the reference signal (RS) for that channel) and another signal (e.g., another RS). The TCI state may be set (indicated) by upper-layer signaling, physical layer signaling, or a combination thereof.

[0020] The channel / signal to which the TCI status applies may also be called the target channel / reference signal (target channel / RS), or simply the target, while the other signal mentioned above may be called the reference signal (reference RS), source RS, or simply the reference.

[0021] The channel on which the TCI state or spatial relationship is set (specified) may be, for example, at least one of the following: Physical Downlink Shared Channel (PDSCH), Physical Downlink Control Channel (PDCCH), Physical Uplink Shared Channel (PUSCH), or Physical Uplink Control Channel (PUCCH).

[0022] Furthermore, the RS that has a QCL relationship with the channel may be at least one of the following: a Synchronization Signal Block (SSB), a Channel State Information Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), a Tracking CSI-RS (also called a Tracking Reference Signal (TRS)), a QCL detection reference signal (also called a QRS), or a Demodulation Reference Signal (DMRS)).

[0023] An SSB is a signal block that includes at least one of a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH). An SSB may also be called an SS / PBCH block.

[0024] The RS of a QCL type X in a TCI state may also mean the RS in the relationship between a channel / signal (or its DMRS) and a QCL type X, and this RS may also be called the QCL source of the QCL type X in that TCI state.

[0025] (L1 / L2 cell-to-cell mobility) As described above, it is being considered that a UE may send a UL to one or more cells / TRPs. In this case, the following Scenario 1 or Scenario 2 is possible. In this disclosure, a serving cell may be interpreted as a TRP within a serving cell. Layer 1 / layer 2 (L1 / L2) and DCI / Medium Access Control Control Element (MAC CE) may be interpreted as mutually exclusive. In this disclosure, a PCI different from the Physical Cell Identity (PCI) of the current serving cell may simply be referred to as a "different PCI". Non-serving cells, cells with different PCIs, and additional cells may be interpreted as mutually exclusive.

[0026] <Scenario 1> Scenario 1 may, for example, support inter-cell mobility in a multi-TRP (Trans-Traffic Relay Program), but it may also be a scenario that does not support inter-cell mobility in a multi-TRP.

[0027] (1) The UE receives from the serving cell the settings for the SSB for beam measurement of the TRP corresponding to a PCI different from that of the serving cell, and the settings necessary to use wireless resources for data transmission and reception, including resources for a different PCI. (2) The UE performs beam measurements of the TRP corresponding to the different PCIs and reports the beam measurement results to the serving cell. (3) Based on the above report, the Transmission Configuration Indication (TCI) status associated with the TRP corresponding to the different PCI is activated by L1 / L2 signaling from the serving cell. (4) UEs send and receive data using dedicated channels on the TRP that correspond to different PCIs. (5) The UE must always cover the serving cell, including in the case of multi-TRP. The UE must use common channels from the serving cell (such as the Broadcast Control Channel (BCCH) and the Paging Channel (PCH)), as in conventional systems.

[0028] In Scenario 1, when the UE sends and receives signals with the additional cell / TRP (the TRP corresponding to the PCI of the additional cell), the serving cell (the UE's assumption of the serving cell) remains unchanged. The UE sets higher-layer parameters related to the PCI of the non-serving cell from the serving cell. Scenario 1 may be applied, for example, in Rel. 17.

[0029] Figure 1A shows an example of UE movement in Rel.17. Suppose the UE moves from a PCI#1 cell (serving cell) to a PCI#3 cell (additional cell) (overlapping with the serving cell). In this case, Rel.17 does not allow switching of the serving cell via L1 / L2. The additional cell is a cell with a different additional PCI than the serving cell. The UE can receive / transmit UE-dedicated channels from the additional cell. The UE needs to be within the serving cell's coverage to receive UE-common channels (e.g., system information / paging / short messages).

[0030] <Scenario 2> In Scenario 2, L1 / L2 inter-cell mobility is applied. With L1 / L2 inter-cell mobility, serving cell changes can be made using functions such as beam control without RRC reconfiguration. In other words, transmission and reception with additional cells are possible without handover. Since handover requires RRC reconnection and other factors, resulting in a period of data communication interruption, applying L1 / L2 inter-cell mobility, which does not require handover, allows data communication to continue even when the serving cell is changed. Scenario 2 may be applied, for example, in Rel.18. In Scenario 2, for example, the following procedure is performed.

[0031] (1) The UE receives the SSB settings for a cell with a different PCI (additional cell) from the serving cell for beam measurement / serving cell changes. (2) The UE performs beam measurements of the cell using different PCIs and reports the measurement results to the serving cell. (3) The UE may receive the configuration of cells with different PCIs (serving cell configuration) through upper-layer signaling (e.g., RRC). In other words, pre-configuration regarding serving cell changes may be performed. This configuration may be performed together with the configuration in (1) or separately. (4) Based on the above report, the TCI status of cells with different PCIs may be activated by L1 / L2 signaling in accordance with the change in the serving cell. The activation of the TCI status and the change in the serving cell may be performed separately. (5) The UE changes the serving cell (assumed to be the serving cell) and starts receiving / transmitting using the pre-configured individual UE channel and TCI state.

[0032] In other words, in Scenario 2, the serving cell (the assumed serving cell in the UE) is updated by L1 / L2 signaling. Scenario 2 may also be applied in Rel. 18.

[0033] Figure 1B shows an example of UE migration in Rel.18. In Rel.18, serving cells are switched via L1 / L2. UEs can receive / transmit UE-dedicated / common channels to and from the new serving cell. UEs may be outside the coverage of the previous serving cell.

[0034] (Setting multiple candidate cells) Figure 2 shows an example of the association between serving cells and candidate cells. SpCell#0, SCell#1, or SCell#2 are assumed to be serving cells. SpCell means special cell (including primary cell (PCell) and primary secondary cell (PSCell)). SCell means secondary cell. SpCell#0 is associated with candidate cells #0-1, #0-2, and #0-3. SCell#1 is associated with candidate cell #1-1. SCell#2 is associated with candidate cells #2-1 and #2-2. Thus, a serving cell may be associated with one or more candidate cells (candidate serving cells).

[0035] Regarding the setting of candidate cells (candidate cells) when changing the serving cell, the following options 1 and 2 are possible, for example.

[0036] <Option 1> Similar to inter-cell mobility in Rel.17, the information in ServingCellConfig may include information about multiple candidate cells. In this case, the multiple candidate cells must share the same PDCCH / PDSCH / UL settings as the serving cell.

[0037] For example, in inter-cell mobility in Rel.17, "mimoParam-r17" is added under ServingCellConfig, and PCI configuration information is added. mimoParam-r17 may include additionalPCI-ToAddModList-r17, which is a list of information for additional SSBs that have a different PCI than the serving cell. Candidate cells (additional cells, cells with additionalPCI) may be given the same settings as the serving cell, with the exception of some information.

[0038] <Option 2> Multiple candidate cells may have a complete configuration (e.g., ServingCellConfig) applied to each cell, and may be associated with each serving cell by reusing the carrier aggregation (CA) configuration framework. In other words, candidate cells may not share configuration information with the serving cell and may have different configurations applied. The UE can communicate appropriately with the candidate cells because it is provided with a complete configuration for each candidate cell.

[0039] The CA configuration framework allows for the configuration of SpCells for each cell group and the addition of multiple SCells. By reusing the CA framework, a serving cell may be configured for each cell group of L1 / L2 inter-cell mobility, and multiple candidate cells may be configured. Candidate cells may be activated / deactivated by MAC CE. Candidate cells may also be activated / deactivated by MAC CE when the TCI information corresponding to the candidate cell is activated / deactivated. This method is considered beneficial in reducing the complexity of UE operation.

[0040] Figure 3A shows the first example of option 2 for candidate cell configuration. In the example in Figure 3A, the candidate cells are assigned a common candidate cell pool for cell switching in the MCG / SCG. That is, candidate cells #3 to #7 are treated as a single pool (group), regardless of their frequency band.

[0041] Figure 3B shows a second example of option 2 for candidate cell configuration. In the example in Figure 3B, multiple cell groups are configured, and cell group switching is possible via L1 / L2 signaling. Candidate cells are configured for each cell group, and the configuration for each group may include the corresponding SpCell and SCell indices.

[0042] (Signaling for serving cell change instructions) This section describes implicit and explicit signaling for serving cell change instructions.

[0043] [Aspect 1] Embodiment 1 describes implicit signaling for serving cell change instructions.

[0044] [[Option 1-1]] If a specific Control Resource Set (CORESET) (for example, CORESET#0, the CH5 Type0-CSS CORESET, or at least one of the CH6 / CH7 / CH8 CSS CORESETs) is indicated (activated) by MAC CE along with one or more TCI states associated with a cell having a different PCI than the serving cell (i.e., if one or more TCI states associated with a cell having a different PCI than the serving cell are indicated / activated by MAC CE for a specific CORESET), then the UE may decide to change the serving cell to another cell (cell x, a cell with a different PCI). In other words, this activation may implicitly indicate that the serving cell will be changed to another cell.

[0045] In this case, the UE may update the beams of other CORESET IDs, other CORESETs using CH6 / CH7 / CH8, or other CORESETs using CSS to the same TCI state as the activated TCI state described above.

[0046] [[Options 1-2]] When MAC CE activates / deactivates a TCI state of PDSCH, if all such TCI states activated by MAC CE are associated with the same cell x that has a different PCI than the serving cell, the UE may decide to change the serving cell to another cell (cell x). In other words, this association may implicitly indicate a change of the serving cell to another cell.

[0047] In cases where this option applies, if the NW (base station) does not change the serving cell, when MAC CE activates the TCI state of the PDSCH associated with a cell with a different PCI, it must also include the TCI state associated with another cell (for example, the current serving cell or a second cell with a different PCI).

[0048] [[Options 1-3]] If MAC CE activates / deactivates a Unified TCI state (e.g., corresponding to the Unified TCI Framework in Rel. 17), and all activated Unified TCI states are associated with the same cell x having different PCIs, then UE may decide to change the serving cell to another cell (cell x). In other words, this association may implicitly indicate a change in the serving cell to another cell.

[0049] [Aspect 2] Embodiment 2 describes explicit signaling for serving cell change instructions. Embodiment 2 applies, for example, to Scenario 2 described above.

[0050] [[Option 2-1]] The following is an example of a serving cell change instruction. Note that activating / deactivating a non-serving cell, changing a serving cell, and sending / receiving data to / from another cell (non-serving cell) with a different physical cell ID than the serving cell's physical cell ID may be interpreted interchangeably.

[0051] The UE may receive a new MAC CE containing at least one of the following fields (information) indicating the non-serving cell, which is used to activate / deactivate the non-serving cell. Upon receiving such a MAC CE, the UE may decide to change the serving cell to another cell (non-serving cell). The UE may also control the transmission and reception of DL / UL signals with the non-serving cell based on this information. There may be one or more non-serving cells. In the example below, a MAC CE containing multiple fields indicating multiple non-serving cell indices is applied.

[0052] (1) Serving cell ID. (2) BWP ID. (3) Non-serving cell ID to be used for activation. The non-serving cell ID may be replaced with any information that corresponds to the non-serving cell (that can identify the non-serving cell).

[0053] As an example of (3), any of (3-1) to (3-5) may be applied. (3-1) PCI (direct PCI). For example, 10 bits are used. (3-2) Re-indexing of non-serving cells (new ID). The new ID may be associated with a portion of the PCI and may be set only for serving cells and non-serving cells that the UE uses (is available for). The new ID may have fewer bits than the PCI. (3-3) CSI Report Configuration ID (CSI-ReportConfigId) (if CSI-ReportConfig corresponds to one or more non-serving cells). (3-4) CSI Resource Configuration ID (CSI-ResourceConfigId) (if CSI-ResourceConfigId corresponds to one or more non-serving cells). (3-5) A bitmap indicating the activation / deactivation status of each non-serving cell. The size (number of bits) of the bitmap may be the same as the number of non-serving cells set on this CC. For example, if the second of three non-serving cells is to be activated, "010" will be set.

[0054] At least one piece of information contained in the MAC CE may be included in the DCI. Alternatively, at least one of the serving cells activated by the MAC CE may be indicated by the DCI. The MAC CE / DCI may include a field indicating the TCI status / SSB / CSI-RS from cells with different PCIs so that the UE can recognize the DL beam being monitored on the target cell (the modified serving cell). The UE may use the TCI status / SSB / CSI-RS to create and transmit a beam report (CSI report).

[0055] [[Option 2-2]] The UE may receive a MAC CE with a new 1-bit field "C" added to the existing MAC CE. This field indicates whether to change the serving cell. The UE may receive the MAC CE and, based on this field, decide whether to change the serving cell to another cell.

[0056] [[Options 2-3]] In addition to the MAC CE in Option 2-2, the MAC CE may also include fields indicating the serving cell index / PCI / other IDs (such as the new ID in Option 2-1 above) and the TCI status / SSB / CSI-RS fields of the target cell (the serving cell after the change).

[0057] Thus, since the instruction for changing the serving cell is issued by MAC CE / DCI, the UE can appropriately change the serving cell.

[0058] [Serving cell switch example 1] Figure 4 shows an example of a serving cell switch 1. For example, if L1 / L2 signaling instructs serving cell SpCell#0 of the MCG / SCG to change to candidate cell #0-2, candidate cell #0-2 becomes the new serving cell SpCell#0. Also, for example, if L1 / L2 signaling instructs serving cell SCell#2 of the MCG / SCG to change to candidate cell #2-1, candidate cell #2-1 becomes the new serving cell SCell#2.

[0059] [Serving cell switch example 2] The RRC / MAC CE can set global candidate cell IDs (cell#3,...,#8) for each cell group, band, FR, and UE. The UE may indicate the switching of serving cells using these global candidate cell IDs.

[0060] Figure 5 shows an example of serving cell switching, specifically example 2. Similar to Figure 3A, a pool of multiple candidate cells can be configured, and the serving cell can be switched to any (activated) candidate cell in the pool using L1 / L2 signaling. In this case, the configured candidate cell can become either a SpCell or an SCell based on the L1 / L2 signaling.

[0061] The UE may receive instructions via MAC CE / DCI to change the serving cell (from cell #2-1 to candidate cell #4). The instructed candidate cell #4 then becomes the SpCell of the new cell group.

[0062] [Serving cell switch example 3] RRC / MAC CE can set global candidate cell IDs (cell#0, #1, ..., #2) for each cell group, band, FR, and UE. UE may be instructed to switch serving cells based on these global candidate cell IDs.

[0063] Figure 6 shows an example of a serving cell switch, example 3. The UE receives a command via MAC CE / DCI to change the serving cell (from SpCell#0 to cell#0 of candidate cell group#0). Cell#0 of candidate cell group#0, which was the commanded cell, becomes the SpCell of the new cell group. Also, the cells in the same cell group as the commanded cell#0 (cell#1, #2) become Scell#1 and Scell#2. In other words, the serving cell group is switched.

[0064] (analysis) As mentioned above, future wireless communication systems (e.g., wireless communication systems beyond Rel.16 / 5G) are expected to control communication based on inter-cell mobility including non-serving cells (e.g., candidate cells) or inter-cell mobility using multiple transmit / receive points (e.g., multi-TRP). However, it is unclear how to control the power of UL transmissions when UL transmission is possible to one or more candidate cells. Furthermore, it is unclear how to control cases where transmission to a candidate cell overlaps / collides with transmission to a serving cell or other candidate cells. If UL transmission to candidate cells is not properly controlled, the quality of communication using multiple transmit / receive points may deteriorate.

[0065] Therefore, the inventors have conceived of a wireless communication method that can appropriately control UL transmission even when UL transmission is possible to multiple candidate cells.

[0066] The embodiments of this disclosure will be described in detail below with reference to the drawings. Each wireless communication method according to the embodiments may be applied individually or in combination.

[0067] In this disclosure, "A / B" and "at least one of A and B" may be interpreted as mutually exclusive. In this disclosure, "A / B / C" may mean "at least one of A, B, and C".

[0068] In this disclosure, terms such as notice, activate, deactivate, indicate, select, configure, update, and determine may be interpreted interchangeably. In this disclosure, terms such as support, control, controllable, operate, and operable may be interpreted interchangeably.

[0069] In this disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher-layer parameters, fields, Information Elements (IE), settings, etc., may be interpreted interchangeably. In this disclosure, Medium Access Control elements (MAC Control Element (CE)), update commands, activation / deactivation commands, etc., may be interpreted interchangeably.

[0070] In this disclosure, the upper-layer signaling may be any or a combination thereof, such as Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, and other messages (e.g., messages from the core network, such as positioning protocol messages (e.g., NR Positioning Protocol A (NRPPa) / LTE Positioning Protocol (LPP)) messages).

[0071] In this disclosure, MAC signaling may include, for example, MAC Control Elements (MAC CEs) and MAC Protocol Data Units (PDUs). Broadcast information may include, for example, Master Information Blocks (MIBs), System Information Blocks (SIBs), Remaining Minimum System Information (RMSIs), and Other System Information (OSIs).

[0072] In this disclosure, physical layer signaling may include, for example, Downlink Control Information (DCI) and Uplink Control Information (UCI).

[0073] In this disclosure, terms such as drop, suspend, cancel, puncture, rate match, postpone, and do not send may be interpreted interchangeably.

[0074] In this disclosure, cell group, serving cell group, master cell group (MCG), and secondary cell group (SCG) may be interpreted interchangeably. L1 / L2, L1 / L2 signaling, and DCI / MAC CE may be interpreted interchangeably. A serving cell may be replaced with a cell that transmits a PDSCH. A candidate cell may mean a cell that is a candidate to become a serving cell through L1 / L2 inter-cell mobility.

[0075] In this disclosure, cell, PCI, serving cell, source serving cell, source cell, CC, BWP, BWP within CC, and band may be interpreted as equivalent to each other. In this disclosure, cell, PCI, cell with additional PCI, additional cell, other cell, non-serving cell, cell with a different PCI, candidate cell, candidate serving cell, cell with a PCI different from the current serving cell's PCI, another serving cell, and target cell may be interpreted as equivalent to each other. In this disclosure, switch, change, and update may be interpreted as equivalent to each other. Serving cell may be interpreted as a serving cell before a switch or a serving cell after a switch.

[0076] L1-L2-triggered mobility (LTM) and L1 / L2 inter-cell mobility may be interpreted interchangeably.

[0077] (Wireless communication method) <Prioritizing measures for reducing transmission power> Prioritization for reducing transmit power is described. In the case of single-cell operation with two uplinks, or operation with carrier aggregation, the sum of the UE transmit power of PUSCH, PUCCH, PRACH, or SRS transmits in the serving cell within the frequency range of each transmit opportunity i is P - CMAX (i) If it is predicted to exceed (where P - CMAX (i) P in transmission opportunity i CMAX (i) is a linear value, and the UE allocates power to PUSCH / PUCCH / PRACH / SRS transmits according to the priority order (descending) described below. As a result, the total UE transmit power for transmits on serving cells in a frequency range is equal to the P for all symbols of transmit opportunity i in that frequency range. - CMAX (i) It is controlled to be smaller than or equal to (i).

[0078] For power allocation purposes, if a UE is provided with a specific RRC parameter (uci-MuxWithDiffPrio) and the UE multiplexes HARQ-ACK information into PUSCH, the priority index of PUSCH will be the larger of (a) the priority index of PUSCH and (b) the higher priority index of the HARQ-ACK information. When determining the total transmit power of serving cells in a frequency range for a symbol of transmit opportunity i, the UE does not include power for transmits that start after the symbol of transmit opportunity i. The total UE transmit power for a symbol of a slot is defined as the linear sum of the UE transmit powers of PUSCH, PUCCH, PRACH, and SRS for the symbol of the slot.

[0079] [Priority] (1) Sending PRACH on PCell. (2) PUCCH or PUSCH transmission with a higher priority index. (3) In the case of PUCCH or PUSCH transmissions with the same priority index, the priority is given in the order of (3-1) to (3-3). (3-1) PUCCH transmission with HARQ-ACK information / SR / LRR, or PUSCH transmission with HARQ-ACK information of priority index. (3-2) PUCCH transmission with CSI or PUSCH transmission with CSI. (3-3) Push transmissions for Type-2 random access procedures without priority index or CSI HARQ-ACK information, and push transmissions on PCell. (4) SRS transmission (non-periodic SRS transmission with higher priority than semi-persistent SRS / periodic SRS), or PRACH transmission in serving cells other than PCell.

[0080] In the case of the same priority and in the case of operation involving carrier aggregation, the UE shall perform power allocation with higher priority for transmission on the primary cell of the MCG or SCG than for transmission on the secondary cell. In the case of the same priority and in the case of operation using two UL carriers, the UE shall prioritize power allocation for transmission on the carrier on which the UE is configured to transmit PUCCH. If PUCCH is not configured on either of the two UL carriers, the UE shall prioritize power allocation for transmission on the non-supplementary UL carrier.

[0081] As described above, when the total UE transmission power exceeds a specific value (P - CMAX (i)), the UE shall perform power allocation taking into account the priority.

[0082] <The First Embodiment> FIG. 7 is a flowchart showing an example of the process of the first embodiment. When the total UE transmission power exceeds a specific value (P - CMAX (i)) (YES in step S11), for a plurality of uplink (UL), power shall be allocated based on the priority (step S12), and a plurality of ULs shall be transmitted (step S13). Here, the prioritization for transmission power reduction shall also take into account the PRACH transmission to the candidate cell. Note that the following options and variations are based on the above [Priority], and similar parts are omitted. The priority may be set in the specification or may be set / instructed to the UE by upper layer signaling / physical layer signaling.

[0083] [Option 1] The lowest priority may be set for PRACH transmission on candidate cells other than the PCell and the serving cell. For example, the following priorities may be set.

[0084] [Priority of Option 1] ··· (4) SRS transmission (non-periodic SRS transmission with higher priority than semi-persistent SRS / periodic SRS), or PRACH transmission in serving cells other than PCell. (A) PRACH transmission on candidate cells other than PCell and serving cells.

[0085] [Option 2] In (4) of the above [Priority], the serving cell may be replaced with "serving cell and candidate cell". In other words, the same priority may be set for PRACH transmission from candidate cells as for PRACH transmission from serving cells other than PCell.

[0086] [Priority of Option 2] ... (3-3) Push transmissions for Type-2 random access procedures without priority index or CSI HARQ-ACK information, and push transmissions on PCell. (4') SRS transmission (non-periodic SRS transmission with higher priority than semi-persistent SRS / periodic SRS), or PRACH transmission in serving cells and candidate cells other than PCell.

[0087] [Variations] The "PRACH transmission on candidate cells other than PCell and serving cells (for LTM)" may be set to a higher priority than any of the transmissions (1) to (4) in the above-mentioned [Priority]. The following example shows the above transmission set to a priority between (3) and (4), but it may also be set, for example, above (1), between (1) and (2), or between (2) and (3). This variation may apply when certain parameters (e.g., RRC parameters) are set in the UE.

[0088] [Priority of Option 2] ... (3-3) Push transmissions for Type-2 random access procedures without priority index or CSI HARQ-ACK information, and push transmissions on PCell. (A) PRACH transmission (for LTM) on candidate cells other than PCell and serving cells. (4) SRS transmission (non-periodic SRS transmission with higher priority than semi-persistent SRS / periodic SRS) or PRACH transmission in serving cells and candidate cells other than PCell.

[0089] <Behavior in case of duplicates> In single-carrier operation in an asymmetric spectrum, if a transmission overlaps with any symbol in the symbol set of a slot indicated to the UE for SS / PBCH block reception by ssb-PositionsInBurst of SIB1, ssb-PositionsInBurst of ServingCellConfigCommon, or ssb-PositionsInBurst of SSB-MTCAdditionalPCI associated with a physical cell ID having an active TCI state of PDCCH or PDSCH if dl-OrJointTCI-StateList is not provided to the UE, or for a symbol set of a slot corresponding to an SS / PBCH block configured for L1 beam measurement / reporting, the UE will not transmit PUSCH, PUCCH, or PRACH in that slot, and the UE will not transmit SRS in that symbol set of that slot. The UE does not expect that the symbol set of a slot is indicated as an uplink by certain parameters (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated) when those parameters are provided.

[0090] In other words, in inter-cell beam management (ICBM) of Rel.17, the UE does not transmit ULs on the SSB symbol related to the active TCI state of the candidate cell, and on the SSB symbol (of the candidate cell) set for L1 measurement / reporting. The following collision cases are also considered in Rel.18 LTM.

[0091] Case 1: A collision occurs due to the transmission of PRACH to a candidate cell and the overlap of SSB symbols from a serving cell / candidate cell (another candidate cell) operating on the same frequency as the candidate cell. Case 2: A collision caused by the overlap of PRACH transmission to a candidate cell and UL transmission to a serving cell on the same frequency as the candidate cell. Case 3: Whether to allow parallel PRACH transmissions in candidate cells and SRS / PUCCH / PUSCH transmissions in serving cells at different frequencies.

[0092] However, the type of control the UE (Unified Engineer) would perform in these cases has not been adequately considered.

[0093] [UE ability] UE Capability 1: The UE may transmit UE capability information indicating whether it supports parallel PRACH and SRS / PUCCH / PUSCH transmissions across multiple component carriers (CC) in interband carrier aggregation (CA). UE capability 2: The UE may transmit UE capability information indicating whether it supports transmitting parallel PRACH and SRS / PUCCH / PUSCH across multiple CCs in an in-band discontinuous CA.

[0094] According to the first embodiment, the power of UL transmission to the candidate can be appropriately controlled.

[0095] <Second Embodiment> In this embodiment, we will explain what kind of control the UE performs in each of the above cases 1 to 3.

[0096] [Case 1] The UE does not send a PRACH to candidate cell #A in a specific time domain (or the UE does not expect a PRACH to be triggered by the PDCCH order). The specific time domain may be at least one of the following symbols: (1) or (2). (1) The SSB symbol of the serving cell / candidate cell with the same frequency as candidate cell #A set up / activated for L1 measurement / reporting. (2) The SSB symbol associated with the activated TCI state of the serving cell / candidate cell at the same frequency as candidate cell #A.

[0097] [Case 2] In the event of a collision when a PRACH transmission to candidate cell #A and a periodic UL transmission from the serving cell (such as periodic (P) SRS / PUCCH / CG PUSCH) configured by RRC signaling overlap at the same frequency, the UE may perform one of the following actions (1) to (3):

[0098] (1) The UE does not expect a collision to occur. The UE does not expect that a PRACH in the PDCCH order to the candidate cell will be triggered in the symbol of the UL transmission described above. (2) If the above collision occurs, the UE sends a PRACH to the candidate cell and does not send a UL to the serving cell. (3) If the above collision occurs, the UE does not send a PRACH to the candidate cell, but sends a UL to the serving cell.

[0099] In the event of a collision where a PRACH transmission to candidate cell #A and a quasi-static UL transmission from the serving cell (e.g., semi-persistent (SP) SRS / PUCCH / CG) set by RRC signaling and / or MAC CE overlap at the same frequency, the UE may perform one of the following actions (1) to (3): (1) The UE does not expect a collision to occur. The UE does not expect that a PRACH instruction in the PDCCH order to a candidate cell will be triggered in the symbol of the UL transmission described above. (2) If the above collision occurs, the UE sends a PRACH to the candidate cell and does not send a UL to the serving cell. (3) If the above collision occurs, the UE does not send a PRACH to the candidate cell, but sends a UL to the serving cell.

[0100] In the event of a collision where a PRACH transmission to candidate cell #A and an aperiodic UL transmission from the serving cell (e.g., aperiodic (AP) SRS / dynamic grant (DG) PUSCH) as instructed in the DCI / MAC CE overlap at the same frequency, the UE may perform one of the following actions (1) to (3): (1) The UE does not anticipate a collision. The UE does not anticipate that a PRACH in the PDCCH order will be triggered on the candidate cell in the above UL symbol. (2) If the above collision occurs, the UE sends a PRACH to the candidate cell and does not send a UL to the serving cell. (3) If the above collision occurs, the UE does not send a PRACH to the candidate cell, but sends a UL to the serving cell.

[0101] Furthermore, different actions (any of (1) to (3)) may be applied to different collision cases defined by P / SP / AP UL transmission as described above within the same frequency serving cell.

[0102] For example, in a serving cell of the same frequency, different actions (any of (1) to (3)) may be applied to different collision cases defined by different types of UL channels (e.g., SRS / PUCCH / PUSCH / PRACH).

[0103] For example, the UE behavior during a collision (any of (1) to (3)) may take into account both the P / SP / AP type and the channel type.

[0104] [Case 3] 《Option 1》 The above UE Capabilities 1 and 2 may be reused in LTM. The "parallel PRACH" of UE Capabilities 1 and 2 may include PRACH to candidate cells in LTM.

[0105] 《Option 2》 New UE capabilities may be introduced for parallel PRACH to candidate cells and SRS / PUCCH / PUSCH transmission across multiple CCs (transmissions in the serving cell). For example, (1) or (2) below.

[0106] (1) The UE may transmit common (one) UE capability information indicating whether it supports parallel PRACH and SRS / PUCCH / PUSCH transmissions across multiple CCs for both interband carrier aggregation (CA) and intraband discontinuous CA (for serving cells). (2) The UE may transmit separate UE capability information indicating whether it supports parallel PRACH and SRS / PUCCH / PUSCH transmissions across multiple CCs for interband carrier aggregation (CA) and intraband discontinuous CA (for serving cells).

[0107] 《Option 3》 The above UE Capabilities 1 and 2 cover PRACH to candidate cells at the same frequency as the serving cell. For candidate cells at a different frequency than the serving cell, new UE Capabilities may be introduced between CCs for parallel PRACH to the candidate cell (at a different frequency than the serving cell) and for SRS / PUCCH / PUSCH transmission (within the serving cell). For example, (1) or (2) below.

[0108] (1) The UE may transmit common (one) UE capability information indicating whether it supports parallel PRACH and SRS / PUCCH / PUSCH transmissions across multiple CCs for both interband carrier aggregation (CA) and intraband discontinuous CA (for serving cells). (2) The UE may transmit separate UE capability information indicating whether it supports parallel PRACH and SRS / PUCCH / PUSCH transmissions across multiple CCs for interband carrier aggregation (CA) and intraband discontinuous CA (for serving cells).

[0109] Even if PRACH transmission to a candidate cell and UL transmission to a serving cell or other candidate cell with the same frequency as the candidate cell overlap, appropriate control can be performed.

[0110] <Supplement> [Notification of information to UE] In the embodiments described above, notification of any information from a Network (NW) (e.g., a Base Station (BS)) to a UE (in other words, reception of any information from a BS at the UE) may be performed using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), specific signals / channels (e.g., PDCCH, PDSCH, reference signal), or a combination thereof.

[0111] If the above notification is made by a MAC CE, the MAC CE may be identified by the inclusion of a new Logical Channel ID (LCID) not defined in existing standards in the MAC subheader.

[0112] If the above notification is made by a DCI, the notification may be made by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used to scramble the Cyclic Redundancy Check (CRC) bits assigned to the DCI, or the format of the DCI.

[0113] Furthermore, the notification of any information to the UE in the above-described embodiment may be periodic, semi-persistent, or aperiodic.

[0114] [Notification of information from UE] In the embodiments described above, notification of any information from the UE (to the NW) (in other words, transmission / reporting of any information from the UE to the BS) may be performed using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE), specific signals / channels (e.g., PUCCH, PUSCH, PRACH, reference signals), or a combination thereof.

[0115] If the above notification is made by a MAC CE, the MAC CE may be identified by the inclusion of a new LCID, not specified in existing standards, in the MAC subheader.

[0116] If the above notice is issued by the UCI, the notice may be sent using PUCCH or PUSCH.

[0117] Furthermore, the notification of any information from the UE in the above-described embodiments may be periodic, semi-persistent, or aperiodic.

[0118] [Regarding the application of each embodiment] At least one of the embodiments described above may be applied if certain conditions are met. These conditions may be specified in a standard or notified to the UE / BS using upper-layer signaling / physical layer signaling.

[0119] At least one of the embodiments described above may apply only to a UE that has reported or supports a particular UE capability. Note that "supporting" and "whether or not to support" may be interpreted interchangeably.

[0120] The specific UE capability may represent at least one of the following: • To support specific processing / operation / control / information for at least one of the above embodiments.

[0121] Furthermore, the above-mentioned specific UE capabilities may be capabilities that apply across all frequencies (commonly regardless of frequency), capabilities per frequency (e.g., one or a combination thereof, such as cell, band, band combination, BWP, component carrier, etc.), capabilities per frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), capabilities per subcarrier spacing (SCS), or capabilities per feature set (FS) or feature set per component-carrier (FSPC).

[0122] Furthermore, the specific UE capabilities described above may be capabilities that apply across all duplexing schemes (common to all duplexing schemes), or they may be capabilities specific to each duplexing scheme (e.g., Time Division Duplex (TDD), Frequency Division Duplex (FDD)).

[0123] Furthermore, at least one of the embodiments described above may be applied when the UE is configured / activated / triggered by upper layer signaling / physical layer signaling to perform certain information (or the actions of the embodiments described above) related to the embodiments described above. For example, such certain information may be arbitrary RRC parameters for a particular release (e.g., Rel.18 / 19).

[0124] If the UE does not support at least one of the above-mentioned specific UE capabilities or does not have the above-mentioned specific information configured, the behavior of, for example, Rel.15 / 16 / 17 may be applied.

[0125] (Note) The following invention is added with respect to one embodiment of this disclosure. [Note 1] A control unit that, when the total transmit power exceeds a certain value, allocates power to multiple uplinks (ULs) based on priority, It has a transmitting unit that transmits the plurality of ULs, Among the multiple ULs mentioned above, the Physical Random Access Channel (PRACH) transmission on candidate cells other than the primary cell (PCell) and serving cell is given the same or lower priority as the serving cell. Terminal. [Note 2] The transmitting unit will not transmit the PRACH in a specific time domain if the PRACH transmission to a candidate cell overlaps with the synchronization signal block (SSB) symbol to a serving cell or other candidate cell with the same frequency as the candidate cell. The terminals listed in Appendix 1. [Note 3] The transmitting unit will not transmit either the PRACH transmission or the UL transmission if the PRACH transmission to a candidate cell and the UL transmission to a serving cell with the same frequency as the candidate cell overlap. The terminals listed in Appendix 1 or Appendix 2. [Note 4] The UL transmission is a periodic UL transmission, a quasi-static UL transmission, or a non-periodic UL transmission. The terminals listed in Appendix 3.

[0126] (Wireless communication system) The configuration of a wireless communication system according to one embodiment of this disclosure will be described below. In this wireless communication system, communication is performed using any or a combination thereof of the wireless communication methods according to the above embodiments of this disclosure.

[0127] Figure 8 shows an example of a schematic configuration of a wireless communication system according to one embodiment. The wireless communication system 1 (which may also be simply called system 1) may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc., as specified by the Third Generation Partnership Project (3GPP).

[0128] Furthermore, the wireless communication system 1 may support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and so on.

[0129] In EN-DC, the LTE (E-UTRA) base station (eNB) is the Master Node (MN), and the NR base station (gNB) is the Secondary Node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0130] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity where both MN and SN are NR base stations (gNB) (NR-NR Dual Connectivity (NN-DC))).

[0131] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with relatively wide coverage, and base stations 12 (12a-12c) located within the macrocell C1 that form a small cell C2 that is narrower than the macrocell C1. User terminals 20 may be located within at least one cell. The arrangement and number of each cell and user terminal 20 are not limited to the configuration shown in the figure. Hereinafter, when base stations 11 and 12 are not distinguished, they will be collectively referred to as base station 10.

[0132] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of Carrier Aggregation (CA) using multiple Component Carriers (CC) and Dual Connectivity (DC).

[0133] Each CC may be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). A macrocell C1 may be included in FR1, and a small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may fall in a frequency band higher than FR2.

[0134] Furthermore, the user terminal 20 may communicate using at least one of the following methods at each CC: Time Division Duplex (TDD) and Frequency Division Duplex (FDD).

[0135] Multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.) or wireless (e.g., NR communication). For example, if NR communication is used as a backhaul between base stations 11 and 12, base station 11, which is the upstream station, may be called an Integrated Access Backhaul (IAB) donor, and base station 12, which is the relay station, may be called an IAB node.

[0136] Base station 10 may be connected to the core network 30 via other base stations 10 or directly. The core network 30 may include at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), etc.

[0137] The core network 30 may include network functions (NF) such as User Plane Function (UPF), Access and Mobility Management Function (AMF), Session Management Function (SMF), Unified Data Management (UDM), Application Function (AF), Data Network (DN), Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM). Multiple functions may be provided by a single network node. Furthermore, communication with an external network (e.g., the Internet) may occur via the DN.

[0138] The user terminal 20 may be a terminal that supports at least one of the following communication methods: LTE, LTE-A, 5G, etc.

[0139] In the wireless communication system 1, an orthogonal frequency division multiplexing (OFDM)-based wireless access scheme may be used. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), etc., may be used in at least one of the downlink (DL) and uplink (UL).

[0140] The wireless access method may also be called a waveform. In wireless communication system 1, other wireless access methods (for example, other single-carrier transmission methods, other multi-carrier transmission methods) may be used for the UL and DL wireless access methods.

[0141] In the wireless communication system 1, a Physical Downlink Shared Channel (PDSCH), a Broadcast Channel (PBCH), or a Physical Downlink Control Channel (PDCCH) may be used as the downlink channel, shared by each user terminal 20.

[0142] Furthermore, in the wireless communication system 1, the uplink channel may include a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), a Physical Random Access Channel (PRACH), or the like, all of which are shared by each user terminal 20.

[0143] User data, higher-layer control information, and System Information Blocks (SIBs) are transmitted via PDSCH. User data and higher-layer control information may also be transmitted via PUSCH. Furthermore, Master Information Blocks (MIBs) may be transmitted via PBCH.

[0144] Lower-layer control information may be transmitted by PDCCH. The lower-layer control information may include, for example, Downlink Control Information (DCI) which includes scheduling information for at least one of PDSCH and PUSCH.

[0145] Furthermore, the DCI that schedules PDSCH may be called a DL assignment or DL ​​DCI, and the DCI that schedules PUSCH may be called a UL grant or UL DCI. Furthermore, PDSCH may be interpreted as DL data, and PUSCH may be interpreted as UL data.

[0146] PDCCH detection may utilize a Control Resource Set (CORESET) and a search space. A CORESET corresponds to the resources used to search for DCIs. A search space corresponds to the search area and search method for PDCCH candidates. A single CORESET may be associated with one or more search spaces. The UE may monitor CORESETs associated with a particular search space based on the search space configuration.

[0147] A single search space may correspond to one or more PDCCH candidates corresponding to aggregation levels. One or more search spaces may be referred to as a search space set. In this disclosure, "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," and "CORESET configuration" may be interpreted interchangeably.

[0148] PUCCH may transmit uplink control information (UCI) which includes at least one of the following: channel state information (CSI), delivery acknowledgment (e.g., Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). PRACH may transmit a random access preamble for establishing a connection with the cell.

[0149] In this disclosure, downlinks, uplinks, etc., may be expressed without the prefix "link." Also, the prefix "physical" may be omitted when describing various channels.

[0150] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc., may be transmitted. In the wireless communication system 1, as DL-RS, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc., may be transmitted.

[0151] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS / PBCH block, SS Block (SSB), etc. SS, SSB, etc., may also be called reference signals.

[0152] Furthermore, in the wireless communication system 1, the Uplink Reference Signal (UL-RS) may transmit the Sounding Reference Signal (SRS), Demodulation Reference Signal (DMRS), etc. The DMRS may also be called the User-Specific Reference Signal (UE-specific Reference Signal).

[0153] (base station) Figure 9 shows an example of the configuration of a base station according to one embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that one or more of the control unit 110, transceiver unit 120, transceiver antenna 130, and transmission line interface 140 may be provided.

[0154] In this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each part described below may be omitted.

[0155] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, control circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0156] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc., using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140. The control unit 110 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transceiver unit 120. The control unit 110 may also perform call processing of communication channels (setting, releasing, etc.), status management of the base station 10, management of radio resources, etc.

[0157] The transmitting / receiving unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transmitting / receiving unit 120 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0158] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or it may be composed of a transmitting unit and a receiving unit. The transmitting unit may consist of a transmitting processing unit 1211 and an RF unit 122. The receiving unit may consist of a receiving processing unit 1212, an RF unit 122 and a measuring unit 123.

[0159] The transmitting and receiving antenna 130 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0160] The transmitting / receiving unit 120 may transmit the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 120 may also receive the uplink channel, uplink reference signal, etc.

[0161] The transmitting / receiving unit 120 may form at least one of the transmitting beam and the receiving beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0162] The transmitting / receiving unit 120 (transmission processing unit 1211) may perform processing on data and control information acquired from the control unit 110, for example, at the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer (e.g., RLC retransmission control), the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), etc., to generate a bit sequence to be transmitted.

[0163] The transmitting / receiving unit 120 (transmission processing unit 1211) may perform transmission processing on the bit sequence to be transmitted, such as channel coding (which may include error correction coding), modulation, mapping, filtering, discrete Fourier transform (DFT) processing (if necessary), inverse fast Fourier transform (IFFT) processing, precoding, and digital-to-analog conversion, and output a baseband signal.

[0164] The transmitting / receiving unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 130.

[0165] On the other hand, the transmitting / receiving unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc., on the radio frequency band signal received by the transmitting / receiving antenna 130.

[0166] The transmitting / receiving unit 120 (receiving processing unit 1212) may apply reception processing to the acquired baseband signal, such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, to acquire user data, etc.

[0167] The transmitting / receiving unit 120 (measurement unit 123) may perform measurements related to the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc., based on the received signal. The measurement unit 123 may also measure received power (e.g., Reference Signal Received Power (RSRP)), reception quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0168] The transmission path interface 140 may send and receive signals (backhaul signaling) with devices included in the core network 30 (e.g., network nodes providing NF), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0169] In this disclosure, the transmitting and receiving units of the base station 10 may consist of at least one of a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission path interface 140.

[0170] The control unit 110 may assume that if the total transmit power of the terminals exceeds a certain value, power will be allocated to multiple uplinks (ULs) based on priority.

[0171] The transmitting / receiving unit 120 may receive the multiple ULs.

[0172] (User terminal) Figure 10 shows an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. Note that one or more of the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may be provided.

[0173] In this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each part described below may be omitted.

[0174] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, control circuit, etc., as described based on common understanding in the technical field related to this disclosure.

[0175] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc., using the transmitting / receiving unit 220 and the transmitting / receiving antenna 230. The control unit 210 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transmitting / receiving unit 220.

[0176] The transmitting / receiving unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmitting / receiving unit 220 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0177] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or it may be composed of a transmitting unit and a receiving unit. The transmitting unit may consist of a transmitting processing unit 2211 and an RF unit 222. The receiving unit may consist of a receiving processing unit 2212, an RF unit 222 and a measuring unit 223.

[0178] The transmitting and receiving antenna 230 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0179] The transmitting / receiving unit 220 may receive the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 220 may also transmit the uplink channel, uplink reference signal, etc.

[0180] The transmitting / receiving unit 220 may form at least one of the transmitting beam and the receiving beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0181] The transmitting / receiving unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc., on data and control information acquired from the control unit 210, etc., to generate a bit sequence to be transmitted.

[0182] The transmitting / receiving unit 220 (transmission processing unit 2211) may perform transmission processing on the bit sequence to be transmitted, such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion, and output a baseband signal.

[0183] Whether or not to apply DFT processing may be based on the transform precoding settings. The transmitting / receiving unit 220 (transmission processing unit 2211) may perform DFT processing as part of the transmission process to transmit a channel (for example, PUSCH) using a DFT-s-OFDM waveform if transform precoding is enabled for that channel, or it may not perform DFT processing as part of the transmission process if transform precoding is not enabled for that channel.

[0184] The transmitting / receiving unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 230.

[0185] On the other hand, the transmitting / receiving unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc., on the radio frequency band signal received by the transmitting / receiving antenna 230.

[0186] The transmitting / receiving unit 220 (receiving processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

[0187] The transmitting / receiving unit 220 (measuring unit 223) may perform measurements related to the received signal. For example, the measuring unit 223 may perform RRM measurement, CSI measurement, etc., based on the received signal. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0188] The measurement unit 223 may derive channel measurements for CSI calculation based on channel measurement resources. Channel measurement resources may be, for example, Non Zero Power (NZP) CSI-RS resources. The measurement unit 223 may also derive interference measurements for CSI calculation based on interference measurement resources. Interference measurement resources may be at least one of the following: an NZP CSI-RS resource for interference measurement, a CSI-Interference Measurement (IM) resource, etc. CSI-IM may also be called CSI-Interference Management (IM), and may be interpreted interchangeably with Zero Power (ZP) CSI-RS. In this disclosure, CSI-RS, NZP CSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc., may be interpreted interchangeably.

[0189] In this disclosure, the transmitting and receiving units of the user terminal 20 may consist of at least one of a transmitting / receiving unit 220 and a transmitting / receiving antenna 230.

[0190] The control unit 210 may allocate power to multiple uplinks (ULs) based on priority if the total transmit power exceeds a certain value.

[0191] The transmitting / receiving unit 220 may transmit the multiple ULs.

[0192] The transmitting / receiving unit 220 may choose not to transmit the PRACH in a specific time domain if the PRACH transmission to a candidate cell overlaps with the synchronization signal block (SSB) symbol to a serving cell or other candidate cell with the same frequency as the candidate cell.

[0193] The transmitting / receiving unit 220 may choose not to transmit either the PRACH transmission or the UL transmission if the PRACH transmission to a candidate cell and the UL transmission to a serving cell with the same frequency as the candidate cell overlap. The UL transmission may be a periodic UL transmission, a quasi-static UL transmission, or a non-periodic UL transmission.

[0194] (Hardware configuration) The block diagrams used in the description of the above embodiments show functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may also be realized by combining the above one device or the above multiple devices with software.

[0195] Here, functions include, but are not limited to, judgment, decision, determination, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission may be called a transmitting unit or transmitter. In all cases, as mentioned above, the method of implementation is not particularly limited.

[0196] For example, a base station, user terminal, etc. in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. Figure 11 is a diagram showing an example of the hardware configuration of a base station and user terminal according to one embodiment. The base station 10 and user terminal 20 described above may be physically configured as a computer device including a processor 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0197] In this disclosure, terms such as apparatus, circuit, device, section, and unit are interchangeable. The hardware configuration of the base station 10 and the user terminal 20 may include one or more of the devices shown in the figure, or it may be configured to omit some of the devices.

[0198] For example, although only one processor 1001 is shown in the diagram, there may be multiple processors. Furthermore, processing may be performed by one processor, or by two or more processors simultaneously, sequentially, or by other means. Note that processor 1001 may be implemented using one or more chips.

[0199] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, which allows the processor 1001 to perform calculations and control communication via the communication device 1004, or to control at least one of the reading and writing of data in the memory 1002 and storage 1003.

[0200] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may be composed of a central processing unit (CPU) that includes interfaces with peripheral devices, control units, arithmetic units, registers, etc. For example, at least a part of the control unit 110 (210) and the transmitting / receiving unit 120 (220) described above may be implemented by the processor 1001.

[0201] Furthermore, the processor 1001 reads programs (program code), software modules, data, etc., from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and other functional blocks may be implemented similarly.

[0202] Memory 1002 is a computer-readable recording medium and may consist of at least one of the following: Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. Memory 1002 may also be called a register, cache, or main memory. Memory 1002 can store executable programs (program code), software modules, etc., for carrying out a wireless communication method according to one embodiment of this disclosure.

[0203] Storage 1003 is a computer-readable recording medium and may consist of at least one of the following: a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disk (Compact Disc ROM (CD-ROM)), a digital multipurpose disk, a Blu-ray disk), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, stick, key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be called an auxiliary storage device.

[0204] The communication device 1004 is hardware (transmitting / receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc. The communication device 1004 may be configured to include, for example, a high-frequency switch, duplexer, filter, frequency synthesizer, etc., in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmitting / receiving unit 120 (220), transmitting / receiving antenna 130 (230), etc., may be implemented by the communication device 1004. The transmitting / receiving unit 120 (220) may be implemented with physically or logically separated implementations of a transmitting unit 120a (220a) and a receiving unit 120b (220b).

[0205] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, light-emitting diode (LED) lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0206] Furthermore, each device, such as the processor 1001 and memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for each device.

[0207] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and some or all of each functional block may be implemented using such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0208] (modified version) In addition, terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, channel, symbol, and signal (signal or signaling) may be used interchangeably. Also, a signal may be a message. A reference signal may be abbreviated as RS and may be called a pilot, pilot signal, etc., depending on the applicable standard. Also, a component carrier (CC) may be called a cell, frequency carrier, carrier frequency, etc.

[0209] A wireless frame may consist of one or more periods (frames) in the time domain. Each of these periods (frames) constituting a wireless frame may be called a subframe. Furthermore, a subframe may consist of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0210] Here, the neuralelogy may be communication parameters applied to at least one of the transmission and reception of a signal or channel. The neuralelogy may be, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering processes performed by the transceiver in the frequency domain, or specific windowing processes performed by the transceiver in the time domain.

[0211] A slot may consist of one or more symbols in the time domain (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols). Alternatively, a slot may be a time unit based on neurology.

[0212] A slot may include multiple mini-slots. Each mini-slot may consist of one or more symbols in the time domain. Mini-slots may also be called sub-slots. Mini-slots may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may be called a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may be called a PDSCH (PUSCH) mapping type B.

[0213] Wireless frames, subframes, slots, minislots, and symbols all represent units of time when transmitting a signal. Wireless frames, subframes, slots, minislots, and symbols may each be referred to by different names. Furthermore, the units of time such as frames, subframes, slots, minislots, and symbols in this disclosure may be interpreted as interchangeable.

[0214] For example, one subframe may be called TTI, multiple consecutive subframes may be called TTI, or one slot or one mini-slot may be called TTI. In other words, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (e.g., 1-13 symbols), or a period longer than 1ms. Note that the unit representing TTI may be called a slot, mini-slot, etc., instead of a subframe.

[0215] Here, TTI refers to, for example, the smallest unit of time for scheduling in wireless communication. For example, in an LTE system, the base station schedules each user terminal to allocate wireless resources (such as the frequency bandwidth and transmission power available to each user terminal) in TTI units. However, the definition of TTI is not limited to this.

[0216] TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, code words, etc., or it may be a processing unit for scheduling, link adaptation, etc. Given a TTI, the actual time interval (e.g., number of symbols) to which the transport block, code block, code word, etc. are mapped may be shorter than the given TTI.

[0217] Furthermore, if one slot or one mini-slot is referred to as TTI, then one or more TTIs (i.e., one or more slots or one or more mini-slots) may constitute the minimum time unit of scheduling. In addition, the number of slots (number of mini-slots) that constitute the minimum time unit of scheduling may be controlled.

[0218] A TTI with a time length of 1 ms may also be called a normal TTI (TTI in 3GPP Rel.8-12), a long TTI, a normal subframe, a long subframe, or a slot. A TTI shorter than a normal TTI may also be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini slot, a sub slot, or a slot.

[0219] Furthermore, long TTIs (e.g., normal TTIs, subframes, etc.) may be interpreted as TTIs with a time length exceeding 1 ms, and short TTIs (e.g., shortened TTIs, etc.) may be interpreted as TTIs with a TTI length less than that of a long TTI but 1 ms or more.

[0220] A Resource Block (RB) is a resource allocation unit in the time domain and frequency domain, and in the frequency domain, it may contain one or more consecutive subcarriers. The number of subcarriers in an RB may be the same regardless of the neurology, for example, 12. The number of subcarriers in an RB may be determined based on the neurology.

[0221] Furthermore, an RB may contain one or more symbols in the time domain and may have the length of one slot, one minislot, one subframe, or one TTI. Each TTI, subframe, etc., may consist of one or more resource blocks.

[0222] One or more RBs may also be called Physical RBs (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

[0223] Furthermore, a resource block may consist of one or more resource elements (REs). For example, one RE may be a radio resource area comprising one subcarrier and one symbol.

[0224] A Bandwidth Part (BWP) (also called a partial bandwidth) may represent a subset of consecutive common resource blocks (RBs) for a given neurology in a given carrier. Here, the common RBs may be identified by an index of the RBs relative to the carrier's common reference point. PRBs may be defined and numbered within a BWP.

[0225] A BWP may include UL BWPs (BWPs for UL) and DL BWPs (BWPs for DL). One or more BWPs may be configured within a single carrier for a UE.

[0226] At least one of the configured BWPs may be active, and the UE does not need to assume that it will send or receive a given signal / channel outside of the active BWP. In this disclosure, terms such as "cell" and "carrier" may be read as "BWP".

[0227] The structures described above, such as wireless frames, subframes, slots, minislots, and symbols, are merely illustrative examples. For instance, the number of subframes included in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots within a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, and the number of symbols, symbol length, and cyclic prefix (CP) length within a TTI can be varied in various ways.

[0228] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a predetermined value, or corresponding other information. For example, wireless resources may be indicated by a predetermined index.

[0229] The names used for parameters and other elements in this disclosure are not restrictive in any way. Furthermore, mathematical formulas and other elements that use these parameters may differ from those expressly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

[0230] The information, signals, etc. described in this disclosure may be represented using any of the various different techniques. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0231] Furthermore, information, signals, etc., can be output from upper layers to lower layers and from lower layers to upper layers, or to at least one of the two. Information, signals, etc., may also be input and output via multiple network nodes.

[0232] Input and output information and signals may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information and signals may be overwritten, updated, or appended to. Output information and signals may be deleted. Input information and signals may be transmitted to other devices.

[0233] Information notification is not limited to the embodiments described herein and may be carried out by other means. For example, information notification in this disclosure may be carried out by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof).

[0234] Physical layer signaling may also be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signals), L1 control information (L1 control signals), etc. RRC signaling may also be called RRC messages, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc. MAC signaling may also be communicated using, for example, MAC Control Element (CE).

[0235] Furthermore, notification of the specified information (for example, notification that "X is the case") is not limited to explicit notification, but may also be made implicitly (for example, by not notifying the specified information or by notifying other information).

[0236] The determination may be made by a value represented by 1 bit (0 or 1), by a boolean value represented as true or false, or by a numerical comparison (for example, a comparison with a predetermined value).

[0237] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0238] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0239] The terms “system” and “network” as used in this disclosure may be used interchangeably. “Network” may also mean the equipment included in the network (e.g., base stations).

[0240] In this disclosure, terms such as “precoding,” “precoder,” “weight (precoding weight),” “quasi-co-location (QCL),” “transmission configuration indication state (TCI state),” “spatial relation,” “spatial domain filter,” “transmit power,” “phase rotation,” “antenna port,” “layer,” “number of layers,” “rank,” “resource,” “resource set,” “beam,” “beam width,” “beam angle,” “antenna,” “antenna element,” “panel,” “UE panel,” “transmitting entity,” and “receiving entity” may be used interchangeably.

[0241] In this disclosure, "antenna port" may be interpreted interchangeably with "antenna port for any signal / channel" (e.g., a Demodulation Reference Signal (DMRS) port). In this disclosure, "resource" may be interpreted interchangeably with "resource for any signal / channel" (e.g., a reference signal resource, an SRS resource, etc.). Resources may include time / frequency / code / spatial / power resources. Furthermore, a spatial domain transmit filter may include at least one of a spatial domain transmit filter and a spatial domain receive filter.

[0242] The above group may include, for example, at least one of the following: a spatial relationship group, a code division multiplexing (CDM) group, a reference signal (RS) group, a control resource set (CORESET) group, a PUCCH group, an antenna port group (e.g., a DMRS port group), a layer group, a resource group, a beam group, an antenna group, or a panel group.

[0243] Furthermore, in this disclosure, beam, SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, Codeword (CW), Transport Block (TB), RS, etc., may be interpreted as being interchangeable.

[0244] Also, in the present disclosure, the TCI state, the downlink TCI state (DL TCI state), the uplink TCI state (UL TCI state), the unified TCI state, the common TCI state, the joint TCI state, etc. may be read as each other.

[0245] Also, in the present disclosure, "QCL", "QCL assumption", "QCL relationship", "QCL type information", "QCL property / properties", "characteristics of a specific QCL type (e.g., type A, type D)", "a specific QCL type (e.g., type A, type D)", etc. may be read as each other.

[0246] In the present disclosure, an index, an identifier (Identifier (ID)), an indicator, an indication, a resource ID, etc. may be read as each other. In the present disclosure, a sequence, a list, a set, a group, a cluster, a subset, etc. may be read as each other.

[0247] Also, the spatial relationship information Identifier (ID) (TCI state ID) and the spatial relationship information (TCI state) may be read as each other. "Spatial relationship information (TCI state)" may be read as "a set of spatial relationship information (TCI state)", "one or more pieces of spatial relationship information", etc. The TCI state and TCI may be read as each other. The spatial relationship information and the spatial relationship may be read as each other.

[0248] In this disclosure, terms such as "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0249] A base station can house one or more (e.g., three) cells. If a base station houses multiple cells, the entire coverage area of ​​the base station can be divided into several smaller areas, each of which may also be provided with communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The terms “cell” or “sector” refer to part or all of the coverage area of ​​at least one of the base station and / or base station subsystems that provide communication services in that coverage.

[0250] In this disclosure, the transmission of information by a base station to a terminal may be interpreted as the base station instructing the terminal to perform a control / operation based on said information.

[0251] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0252] A mobile station may also be called a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other appropriate term.

[0253] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. At least one of the base station and the mobile station may also be a device mounted on a moving object, the moving object itself, etc.

[0254] The term "mobile object" refers to any movable object, regardless of its speed, and naturally includes cases where the mobile object is stationary. Examples of such mobile objects include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcarts, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and items carried on them. Furthermore, such mobile objects may be autonomously driven objects operating based on operational commands.

[0255] The mobile entity may be a vehicle (e.g., a car, an airplane), an unmanned mobile entity (e.g., a drone, an autonomous vehicle), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0256] Figure 12 shows an example of a vehicle according to one embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed sensor 51, a pneumatic pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0257] The drive unit 41 consists of, for example, at least one of an engine, a motor, or an engine-motor hybrid. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.

[0258] The electronic control unit 49 consists of a microprocessor 61, memory (ROM, RAM) 62, and communication ports (e.g., input / output (IO) ports) 63. Signals from various sensors 50-58 installed in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0259] Signals from various sensors 50-58 include current signals from current sensor 50 for sensing motor current, rotational speed signals of front wheels 46 / rear wheels 47 acquired by rotational speed sensor 51, air pressure signals of front wheels 46 / rear wheels 47 acquired by air pressure sensor 52, vehicle speed signals acquired by vehicle speed sensor 53, acceleration signals acquired by acceleration sensor 54, accelerator pedal depression signal of accelerator pedal 43 acquired by accelerator pedal sensor 55, brake pedal depression signal of brake pedal 44 acquired by brake pedal sensor 56, operation signals of shift lever 45 acquired by shift lever sensor 57, and detection signals for detecting obstacles, vehicles, pedestrians, etc., acquired by object detection sensor 58.

[0260] The information service unit 59 consists of various devices for providing (outputting) various types of information such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, displays, television, and radio, and one or more ECUs that control these devices. The information service unit 59 uses information acquired from external devices via a communication module 60 or the like to provide various types of information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0261] The information service unit 59 may include input devices that accept input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) and output devices that perform output to the outside (e.g., display, speaker, LED lamp, touch panel, etc.).

[0262] The driver assistance system unit 64 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Unit (IMU), Inertial Navigation System (INS)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driver assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driver assistance functions or autonomous driving functions.

[0263] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 sends and receives data (information) via the communication port 63 to the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axle 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50-58 provided in the vehicle 40.

[0264] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with external devices. For example, it can send and receive various types of information to and from external devices via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the base station 10 or the user terminal 20 described above. Alternatively, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 (it may function as at least one of the base station 10 and the user terminal 20).

[0265] The communication module 60 may transmit at least one of the following to an external device via wireless communication: signals from the various sensors 50-58 input to the electronic control unit 49, information obtained based on said signals, and information based on input from an external source (user) obtained via the information service unit 59. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc., may also be called input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above input.

[0266] The communication module 60 receives various information (such as traffic information, signal information, inter-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 be referred to as an output unit that outputs information (for example, outputs information to devices such as a display and a speaker based on PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0267] Also, the communication module 60 stores various information received from an external device in the memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axle 48, various sensors 50 - 58, etc. provided in the vehicle 40.

[0268] Also, the base station in the present disclosure may be read as a user terminal. For example, for a configuration in which the communication between the base station and the user terminal is replaced with communication between a plurality of user terminals (which may be referred to as, for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.), each aspect / embodiment of the present disclosure may be applied. In this case, the functions of the above-described base station 10 may be configured as functions of the user terminal 20. Also, terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (for example, "sidelink"). For example, the uplink channel, downlink channel, etc. may be read as the sidelink channel.

[0269] Similarly, the user terminal in the present disclosure may be read as a base station. In this case, the functions of the above-described user terminal 20 may be configured as functions of the base station 10.

[0270] In this disclosure, operations performed by a base station may, in some cases, be performed by its upper node. In a network including one or more network nodes with base stations, it is clear that various operations performed for communication with terminals may be performed by the base station, one or more network nodes other than the base station (for example, a Mobility Management Entity (MME), a Serving Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0271] Each aspect / embodiment described in this disclosure may be used individually, in combination, or switched between during execution. Furthermore, the processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described in this disclosure may be rearranged in order, provided they are consistent. For example, the methods described in this disclosure present various step elements in an exemplary order and are not limited to that specific order.

[0272] Each aspect / embodiment described in this disclosure includes Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (where x is, for example, an integer or decimal)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM®), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), and IEEE This may apply to systems utilizing 802.20, Ultra-WideBand (UWB), Bluetooth®, or other appropriate wireless communication methods, as well as next-generation systems that are extended, modified, created, or defined based on these. It may also apply to combinations of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0273] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0274] Any reference to elements using the designations “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, the references to the first and second elements do not imply that only two elements may be employed or that the first element must precede the second element in any way.

[0275] The term “determining” as used in this disclosure may encompass a wide variety of actions. For example, “determining” may be considered to include judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiry (e.g., searching in tables, databases, or other data structures), ascertaining, etc.

[0276] Furthermore, "judgment (decision)" may be considered as "judging (deciding)" things like receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory).

[0277] Furthermore, "judgment (decision)" may be considered as "judging (deciding)" something like resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment (decision)" may be considered as "judging (deciding)" something about an action. In this disclosure, "judgment (decision)" may be interpreted interchangeably with the actions described above.

[0278] Furthermore, in this disclosure, “determine / determining” may be interpreted as “assume / assuming,” “expect / expecting,” or “consider / considering.” In addition, in this disclosure, “not assuming that…” may be interpreted as “assuming that…”

[0279] In this disclosure, “expect” may be interpreted as “be expected.” For example, “expect(s) …” (where “...” may be expressed as a that clause, an infinitive, etc.) may be interpreted as “be expected ….” “does not expect …” may be interpreted as “be not expected ….” Furthermore, “An apparatus A is not expected …” may be interpreted as “An apparatus B other than apparatus A does not expect …” (for example, if apparatus A is a UE, apparatus B may be a base station).

[0280] The term "maximum transmit power" as used in this disclosure may mean the maximum value of the transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0281] As used in this disclosure, the terms “connected,” “coupled,” and any variations thereof mean any direct or indirect connection or coupling between two or more elements, and may include one or more intermediate elements between two elements that are “connected” or “coupled” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be replaced with “access.”

[0282] In this disclosure, when two elements are connected, they can be considered to be “connected” or “coupled” to each other using one or more wires, cables, printed electrical connections, etc., and, in some non-exclusive and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, or optical domain (both visible and invisible).

[0283] In this disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "combine" may be interpreted similarly to "different."

[0284] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0285] In this disclosure, if articles are added by translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0286] In this disclosure, terms such as "less than or equal to," "less than," "greater than or equal to," "more than," and "equal to" may be interpreted interchangeably. In addition, in this disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "early," "slow," "wide," and "narrow" may be interpreted interchangeably, not limited to the positive, comparative, and superlative degrees. Furthermore, in this disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "early," "slow," "wide," and "narrow" may be interpreted interchangeably, not limited to the positive, comparative, and superlative degrees, by adding "i-th" (where i is any integer) to the expression (for example, "highest" may be interpreted interchangeably with "i-th highest").

[0287] In this disclosure, "of," "for," "regarding," "related to," and "associated with" may be interpreted as being interchangeable.

[0288] In this disclosure, phrases such as "when A, B", "if A, then B", "B upon A", "B in response to A", "B based on A", "B during / while A", "B before A", "B at (the same time as) / on A", "B after A", "B since A", and "B until A" may be interchangeable. Furthermore, A, B, etc., may be replaced with appropriate expressions such as nouns, gerunds, or regular sentences depending on the context. The time difference between A and B may be approximately 0 (immediately after or immediately before). A time offset may also be applied to the time when A occurs. For example, "A" may be interpreted as "before / after the time offset when A occurs". The time offset (e.g., one or more symbols / slots) may be predetermined or determined by the UE based on the information provided.

[0289] In this disclosure, timing, time, duration, time instance, any unit of time (e.g., slot, subslot, symbol, subframe), period, occasion, resource, etc., may be interpreted interchangeably.

[0290] Although the invention described herein has been explained in detail above, it will be clear to those skilled in the art that the invention described herein is not limited to the embodiments described herein. The descriptions herein are illustrative and not intended to be restrictive in any way to the invention described herein.

Claims

1. A control unit that, when the total transmit power exceeds a certain value, allocates power to multiple uplinks (ULs) based on priority, It has a transmitting unit that transmits the plurality of ULs, Among the multiple ULs, the Physical Random Access Channel (PRACH) transmission on candidate cells other than the primary cell (PCell) and the serving cell is given the same or lower priority as the serving cell. Terminal.

2. The transmitting unit will not transmit the PRACH in a specific time domain if the PRACH transmission to a candidate cell overlaps with the synchronization signal block (SSB) symbol to a serving cell or other candidate cell with the same frequency as the candidate cell. The terminal according to claim 1.

3. The transmitting unit will not transmit either the PRACH transmission or the UL transmission if the PRACH transmission to a candidate cell and the UL transmission to a serving cell with the same frequency as the candidate cell overlap. The terminal according to claim 1.

4. The UL transmission is a periodic UL transmission, a quasi-static UL transmission, or a non-periodic UL transmission. The terminal according to claim 3.

5. If the total transmit power exceeds a certain value, the process involves allocating power to multiple uplinks (ULs) based on priority, The process includes transmitting the plurality of ULs, Among the multiple ULs, the Physical Random Access Channel (PRACH) transmission on candidate cells other than the primary cell (PCell) and the serving cell is given the same or lower priority as the serving cell. The wireless communication method used by the terminal.

6. A control unit that assumes that if the total transmit power of terminals exceeds a certain value, power will be allocated to multiple uplinks (ULs) based on priority, It has a receiving unit that receives the plurality of ULs, Among the multiple ULs, the Physical Random Access Channel (PRACH) transmission on candidate cells other than the primary cell (PCell) and the serving cell is given the same or lower priority as the serving cell. Base station.

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