Terminal, wireless communication method and base station

Abstract

A terminal involved in one embodiment of the present disclosure comprises: a control unit, which triggers a power headroom report (PHR) associated with a certain panel when a trigger event related to the panel occurs; and a sending unit, which sends a medium access control (MAC) control element related to the triggered PHR, wherein the trigger event includes an event such as expiration of a periodic timer associated with the panel. According to one embodiment of the present disclosure, a PHR associated with a panel can be appropriately triggered / sent.

Description

Technical Field

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

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

[0003] Successor systems of LTE (also known as, 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 studied.

[0004] Prior art literature

[0005] Non-patent literature

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

[0007] Problems to be solved by the invention

[0008] In NR, a user terminal (User Equipment (UE)) sends a PH report (Power Headroom Report (PHR)) containing information about the power headroom (PH) of each serving cell to the network. The network can use PHR to control the uplink transmission power of the UE.

[0009] In addition, in NR, the response to the problem of Maximum Permitted Exposure (MPE) (or electromagnetic power density exposure) is being studied.

[0010] In addition, in NR, research is underway to facilitate UL transmit beam selection based on UL beam indication in order to perform high-speed selection of UL panels for UEs equipped with multiple panels, taking into account UL coverage loss caused by MPE.

[0011] However, since the current specifications do not take the panel into consideration appropriately, it is assumed that the PHR is triggered when it is not necessarily necessary to trigger the PHR. If the appropriate PHR is not sent, there is a concern that communication throughput, communication quality, etc. may deteriorate.

[0012] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station capable of appropriately triggering / sending a PHR associated with a panel.

[0013] Means for solving problems

[0014] A terminal involved in one method of the present disclosure comprises: a control unit, which triggers a power headroom report (PHR) associated with a certain panel when a trigger event related to the panel occurs; and a sending unit, which sends a media access control (MAC) control element related to the triggered PHR, wherein the trigger event includes an event such as the expiration of a periodic timer associated with the panel.

[0015] Effects of the Invention

[0016] According to one aspect of the present disclosure, a PHR associated with a panel can be appropriately triggered / sent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a diagram showing an example of PHR MAC CE in Rel.15NR.

[0018] Figures 2A-2D This is a diagram showing an example of the structure of the panel-specific PHR MAC CE.

[0019] Figure 3A And 3B is a diagram showing another example of the structure of the panel-specific PHR MAC CE.

[0020] Figures 4A-4C This is a diagram showing an example of control related to the prohibition timer according to the second embodiment.

[0021] Figure 5A 5B is a diagram showing an example of control related to the periodic timer according to the third embodiment.

[0022] Fig. 6A and 6B is a diagram showing another example of control related to the periodic timer of the third embodiment.

[0023] Figure 7 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0024] Figure 8 This is a diagram showing an example of the configuration of a base station according to an embodiment.

[0025] Fig. 9 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0026] Fig.10 This is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment. DETAILED DESCRIPTION

[0027] (PHR)

[0028] In NR, the UE sends a PH report (Power Headroom (PH)) containing information about the power headroom (PH) of each serving cell to the network. The network can use PHR to control the uplink transmission power of the UE.

[0029] The PHR may also be transmitted through MAC (Medium Access Control) signaling using PUSCH (Physical Uplink Shared Channel). For example, the PHR is notified using a PHR MAC CE (Control Element) included in a MAC PDU (Protocol Data Unit).

[0030] Figure 1 This is a diagram showing an example of PHR MAC CE in Rel.15NR. Figure 1 It is a single entry PHR MAC CE. This MAC CE consists of 2 octets (=16 bits). Figure 1 The 'R' respectively indicates a 1-bit reserved field, for example, a value set to '0'.

[0031] Figure 1 The 'PH (Type 1, PCell)' field is a 6-bit field, indicating an index associated with a type 1 PH of a PCell (Primary Cell). The index associated with the PH is associated with a specific PH value (or level (dB)).

[0032] In addition, for example, type 1 PH may be a PH that takes PUSCH into consideration (for example, only takes into consideration the power of PUSCH), type 2 PH may be a PH that takes into consideration PUCCH (for example, takes into consideration the power of both PUSCH and PUCCH), and type 3 PH may be a PH that takes into consideration a measurement reference signal (SRS: Sounding Reference Signal) (for example, takes into consideration the power of PUSCH and SRS).

[0033] Figure 1 'P CMAX,f,c ' indicates a 6-bit field, indicating the P used in the calculation of the above PH field CMAX,f,c Related index. CMAX,f,c The relevant index is associated with the specific UE transmit power level (dB). CMAX,f,c It can also be referred to as the maximum transmission power (maximum allowed transmission power) set for the UE of the serving cell c for the carrier f. CMAX,f,c Abbreviated as P CMAX .

[0034] In addition, NR also supports multiple entry PHR MAC CEs (multiple entry PHR MAC CEs) containing multiple data similar to the above-mentioned single entry (2 octets). The multiple entry PHR MAC CE may also include a PH field for a PSCell (Primary Secondary Cell) or SCell, etc.

[0035] The network may also send PHR setting information related to the conditions for triggering PHR to the UE. Here, the PHR setting information includes, for example, a prohibit timer, a periodic timer, a threshold of path loss change, etc. In this notification, high-layer signaling may also be used. When the PHR triggering conditions are met, the UE triggers PHR.

[0036] In addition, in the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0037] MAC signaling may also use, for example, MAC Control Element (MAC CE), MAC Protocol Data Unit (MAC Protocol Data Unit (PDU)), etc. Broadcast information may also be, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), Other System Information (Other System Information (OSI)), etc.

[0038] (MPE)

[0039] In NR, the response to the problem of Maximum Permitted Exposure (MPE) (or electromagnetic power density exposure) is being studied. For health and safety reasons, UE is required to meet the Federal Communications Commission (FCC) restrictions related to maximum radiation to the human body. For example, in Rel.15NR, several restriction methods are specified as regulations for limiting exposure.

[0040] As a limitation method, a limitation using Power Management Maximum Power Reduction (P-MPR) is specified. For example, the UE maximum output power P CMAX,f,c is set to, the corresponding P UMAX,f,c (measured maximum output power, measured set maximum UE output power) satisfies the following formula.

[0041] P Powerclass -MAX(MAX(MPR f,c ,A-MPR f,c )+ΔMB P,n ,P-MPR f,c )-MAX{T(MAX(MPR f,c ,A-MPR f,c ,)),T(P-MPR f,c )}≤P UMAX,f,c ≤EIRP max )

[0042] EIRP max It is the maximum value of the corresponding measured peak equivalent isotropically radiated power (EIRP: Equivalent Isotopically Radiated Power). P-MPR f,c is a value indicating a reduction in the maximum output power permitted for carrier f of serving cell c.

[0043] In NR, research is underway to facilitate UL transmit beam selection based on UL beam indication in order to enable high-speed selection of UL panels for UEs equipped with multiple panels, taking into account UL coverage loss caused by MPE.

[0044] However, in the Rel.15NR specification, after the last transmission of PHR, if the path loss changes by exceeding a certain threshold for at least one activated serving cell of any MAC entity used as a path loss reference, PHR may be triggered. However, the path loss reference may change due to changes in the beam / panel in the UE (for example, due to MPE), updates of the path loss reference signal (for example, based on updates of MAC CE, use of the default path loss reference signal), etc. In these cases, it is assumed that PHR does not necessarily need to be triggered, but it is not considered in the current specification. If the PHR is not properly sent, there is a concern that communication throughput, communication quality, etc. may deteriorate.

[0045] Therefore, the inventors of the present invention have conceived of methods for properly implementing panel specific PHR triggering / transmission.

[0046] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the embodiments may be applied individually or in combination.

[0047] In addition, in the present disclosure, activation, deactivation, indication, selection, setting, updating, determination, etc. may also be used interchangeably. In addition, in the present disclosure, sequence, list, set (set), group, etc. may also be used interchangeably.

[0048] In addition, in the present disclosure, panels, beams, panel groups, beam groups, uplink (UL) transmitting entities, TRPs, spatial relationship information (SRI), spatial relationships, control resource sets (COntrol REsource SET (CORESET)), PDSCHs, codewords, base stations, specific antenna ports (e.g., demodulation reference signal (DeModulation Reference Signal (DMRS)) ports), specific antenna port groups (e.g., DMRS port groups), specific groups (e.g., code division multiplexing (Code Division Multiplexing (CDM)) groups, specific reference signal groups, CORESET groups), specific resources (e.g., specific reference signal resources), specific resource sets (e.g., specific reference signal resource sets), CORESET pools, etc. may also be replaced with one another.

[0049] In addition, the panel identifier (Identifier (ID)) and the panel can also be replaced with each other. That is, the TRP ID and the TRP can also be replaced with each other, and the CORESET group ID and the CORESET group can also be replaced with each other. The ID and the index can also be replaced with each other.

[0050] (Wireless Communication Method)

[0051] In the present disclosure, an implementation method in which the UE determines the relationship between the SRS and the panel and reports the relationship to the base station is described below. The report may also be referred to as a panel report, etc. In addition, the panel report may also be sent when the relationship between the SRS and the panel is set / indicated by the base station.

[0052] <First embodiment>

[0053] The first embodiment relates to a panel specific PHR.

[0054] In addition, where panel-specific PHRs are used, the PHR associated with the panel being reported CMAX , PH, P-MPR, etc. may also be commonly applied for the panel. In case beam group / panel group specific PHR is utilized, the same PHR is shared within a group. That is, PHRs associated with all beams / panels in the group being reported CMAX , PH, P-MPR, etc. can also be commonly applied to the group. According to this structure, signaling overhead can be appropriately suppressed.

[0055] [Implementation method 1.1]

[0056] In implementation 1.1, the trigger event of the panel-specific PHR (may also be referred to as a trigger event) is described.

[0057] The panel-specific PHR may also be triggered, for example, when at least one of the following triggering events (1) to (5) occurs:

[0058] (1) after the last transmission of a panel-specific PHR for a panel, the path loss for at least one activated serving cell of any MAC entity used as a path loss reference for UL transmissions via (using) the panel changes by more than a certain threshold,

[0059] (2) After the last transmission of the panel-specific PHR for a certain panel, the P-MPR of the panel changes by exceeding a certain threshold,

[0060] (3) The P-MPR of a panel is higher than a certain threshold,

[0061] (4) a prohibit timer (e.g., a timer set by a higher-level parameter phr-ProhibitTimer) expires or has expired,

[0062] (5) A periodic timer (eg, a timer set by the higher-level parameter phr-PeriodicTimer) expires.

[0063] For the above (1), the change in path loss may also be equivalent to the change (difference) in the path loss measured for UL transmission via the panel at a certain time (for example, the current time) and the path loss measured for UL transmission via the panel at the time when the panel-specific PHR for the panel was last sent.

[0064] For the above (1), the change in path loss may also be equivalent to the change (difference) in path loss measured at a certain time (for example, the current time) for UL transmission via a certain beam / panel of the panel group / beam group, and the path loss measured for UL transmission via an arbitrary beam / panel of the panel group / beam group (which may be the same as or different from the above-mentioned beam / panel) at the time when the panel group / beam group specific PHR for the panel group / beam group was last sent.

[0065] In connection with (2) above, in the present disclosure, P-MPR may also be combined with power backoff required due to power management, allowed maximum output power reduction, P-MPR c (P-MPR for serving cell c) etc. are interchangeable.

[0066] The thresholds for (1) and (2) above may also be provided by a higher-level parameter (eg, phr-Tx-PowerFactorChange) (in dB).

[0067] The threshold for (3) may be provided by a high-level parameter related to the thresholds for (1) and (2) or by other high-level parameters.

[0068] The above (4) will be described later in the second embodiment. The above (5) will be described later in the second embodiment.

[0069] In addition, the conditions for triggering an event are not limited to the above (1)-(5), but may also be other conditions.

[0070] [Implementation method 1.2]

[0071] In Embodiment 1.2, the panel-specific PHR MAC CE transmitted when the panel-specific PHR is triggered is described.

[0072] The panel ID may also be included in the panel specific PHR MAC CE.

[0073] Figures 2A-2D 1 is a diagram showing an example of the structure of a panel-specific PHR MAC CE. This example is an example of a single-entry PHR MAC CE for a PCell, but is not limited to this. The PCell may also be replaced with another cell (e.g., an SCell). In addition, a multi-entry PHR MAC CE containing multiple such structures may also be used (in this case, the type 1 PH may also be replaced with another type of PH).

[0074] like Figure 2A As shown, the panel-specific PHR MAC CE can also be in Figure 1 A panel ID field is added to the single entry PHR MAC CE indicating the panel ID (in Figure 2A In the case where the Panel ID field is 4 bits or less, such as Figure 2B As shown, you can also Figure 1 The R field of the single-entry PHR MAC CE is replaced by the Panel ID field (in Figure 2B 2 bits in the .

[0075] Figure 2A And the PH field in 2B, P CMAX、f、c The field may also correspond to a value for the panel for the panel ID represented by the Panel ID field.

[0076] like Figure 2C , Figure 2D As shown, multiple panel ID fields may also be included in the panel-specific PHR MAC CE. Figure 2C It contains two Figure 2A The structure of MAC CE, Figure 2D It contains two Figure 2B MAC CE with structure.

[0077] exist Figure 2C , Figure 2D In the field, "#1" indicates a field related to the first panel indicated by panel ID #1, and "#2" indicates a field related to the second panel indicated by panel ID #2.

[0078] In addition, the panel ID field can uniquely represent the panel regardless of whether it is activated (it can also be configured to represent (identify) all panels of the UE), or it can only represent the activated panel. In this way, the "panel" of the present disclosure can also be interchangeable with the activated panel, the activated panel, etc.

[0079] Figure 3A 3B is a diagram showing another example of the structure of a panel-specific PHR MAC CE. This example is also an example of a single-entry PHR MAC CE for PCell, but is not limited to this. PCell can also be replaced with other cells (e.g., SCell). In addition, a multi-entry PHR MAC CE containing multiple such structures can also be used (in this case, type 1 PH can also be replaced with other types of PH).

[0080] Figure 3A An example of a panel specific PHR MAC CE that does not include a panel ID field is shown. "#i" (i=1-4) of each field may indicate that it is a field related to the i-th panel or a field related to the panel indicated by panel ID #i.

[0081] like Figure 3A Such a MAC CE can also be utilized by a UE that satisfies at least one of the following:

[0082] Use UE capability information to report information about the number of panels it has (supports),

[0083] The network (base station) uses high-layer signaling, physical layer signaling, etc. to set the number of panels to be included in the PHR MAC CE and notified to the UE.

[0084] The UE notifies the network (base station) of the number of panels to be included in the PHR MAC CE and notified using higher layer signaling, physical layer signaling, and the like.

[0085] Figure 3A This also supports the case where the number of these panels is 4.

[0086] In addition, in the case where the UE reports information related to the entire panel, such as Figure 3A Such a MAC CE can also be equivalent to Figure 2C The MAC CE in which all panel ID fields are omitted.

[0087] Figure 3BAn example of a panel-specific PHR MAC CE including a panel ID field corresponding to each panel ID is shown. The AX (X=0-3) field indicates whether information for panel #X+1 (e.g., PH field, PHR field, etc.) is included in the MAC CE (whether it is reported through the MAC CE). CMAX、f、c For example, the PHR MAC CE with A0 field = '0' does not include information for panel #1, and the PHR MAC CE with A0 field = '1' includes information for panel #1.

[0088] Figure 3B An example is shown in which the A0 field=A1 field='1' and the A2 field=A3 field='0'.

[0089] In addition, the order of the fields included in each MAC CE is not limited to the order of these examples. Figure 2C In the same 6 octets, press PH#1, P CMAX、f、c #1, PH#2, P CMAX、f、c The MAC CE included in the order of panel ID #2, panel ID #1, and panel ID #2.

[0090] In addition, the number of panels that the UE has is not limited to 4, but may be any value. In this case, the number of each field (for example, Figure 3B The number of AX fields) can also be increased or decreased from the example shown.

[0091] The panel-specific PHR MAC CE may include or may not include a P-MPR field, wherein the P-MPR field indicates the P-MPR of the panel for the panel ID implicitly or explicitly indicated by the MAC CE. The panel-specific PHR MAC CE may also include the P-MPR field when the PHR is triggered by a specific trigger event (e.g., (2) or (3)) among the above-mentioned trigger events, and may not include the P-MPR field in other cases.

[0092] In addition, when the panel-specific PHR is triggered based on the above-mentioned triggering event, the panel-specific PHR MAC CE may also include only information (e.g., PH field, P CMAX、f、c field, P-MPR field, etc.). In the panel-specific PHR MAC CE, not only information for the panel corresponding to the trigger event that occurred can be included, but also information for panels that are not related to the trigger event that occurred. For example, information for all panels can also be included in the panel-specific PHR MAC CE.

[0093] In addition, when the trigger event described above occurs for a plurality of panels, information for the plurality of panels corresponding to the trigger event that occurred may also be included (for example, PH field, P CMAX、f、c field, P-MPR field, etc.).

[0094] According to the first embodiment described above, the UE can appropriately trigger the transmission of the panel-specific PHR MAC CE related to the appropriate panel based on the triggering event.

[0095] <Second embodiment>

[0096] A second embodiment relates to a prohibit timer (eg, phr-ProhibitTimer).

[0097] With respect to the panel-specific PHR, the inhibit timer may also satisfy at least one of the following:

[0098] Implementation 2.1: One inhibit timer is maintained (or utilized) for all panels,

[0099] Implementation 2.2: An inhibit timer is maintained (or utilized) for a panel,

[0100] Implementation 2.3: An inhibit timer is maintained (or utilized) for a panel group.

[0101] In the case of implementation mode 2.1, the UE may also assume that any panel-specific PHR is not triggered while the prohibition timer is running.

[0102] In the case of implementation mode 2.1, the panel-specific PHR for a certain panel may also be triggered when the triggering event of (4) of implementation mode 1.1 and at least one of the triggering events of (1)-(3) for the panel occur. If the panel-specific PHR (panel-specific PHR MAC CE) for any panel is sent, the prohibit timer may also be restarted. According to implementation mode 2.1, it is not necessary to manage multiple prohibit timers, thereby reducing the complexity of the UE.

[0103] In addition, in the present disclosure, "the timer starts (or restarts)" can also be replaced with "the MAC entity of the UE starts (or restarts) the timer".

[0104] In the case of implementation mode 2.2, the UE may also assume that the panel-specific PHR for a certain panel is not triggered during the period when the prohibition timer for the panel is operating.

[0105] In the case of implementation mode 2.2, an independent prohibition timer is used for each panel. The panel-specific PHR for a certain panel may also be triggered when the trigger event (4) of implementation mode 1.1 for the panel and at least one of the trigger events (1)-(3) for the panel occur. If a panel-specific PHR (panel-specific PHR MAC CE) for a certain panel is sent, the prohibition timer for the panel may also be started again. According to implementation mode 2.2, the situation in which the PHR transmission for other panels is suppressed due to the transmission of the PHR for a certain panel can be reduced.

[0106] In the case of implementation mode 2.3, the UE may also assume that, while the prohibition timer for a certain panel group is operating, the panel-specific PHR for the panel group (or any panel belonging to the panel group) is not triggered.

[0107] In the case of implementation 2.3, an independent inhibit timer is utilized for each panel group. The panel-specific PHR for a panel of a certain panel group may also be triggered when the trigger event of (4) of implementation 1.1 for the panel group and at least one of the trigger events of (1)-(3) for the panel occur. If a panel-specific PHR (panel-specific PHR MAC CE) for any panel of a certain panel group is sent, the inhibit timer for the panel group may also be restarted. According to implementation 2.3, although the inhibit timer is shared in the panel group, the PHR may be triggered / sent independently for each panel in the panel group.

[0108] Figures 4A-4C This is a diagram showing an example of control related to the prohibition timer according to the second embodiment. Figures 4A-4C The following shows the situation where the UE uses the prohibition timer of implementation modes 2.1-2.3 respectively. Figure 4C , imagine that panel group #a includes panels #1 and #2.

[0109] exist Figure 4A If the PHR for panel #1 is sent, the prohibit timer starts again. Before the prohibit timer expires, the PHR for any panel is not triggered / sent.

[0110] exist Figure 4B If the PHR for panel #1 is sent, the inhibit timer for panel #1 is started again. Before the inhibit timer expires, the PHR for panel #1 is not triggered. On the other hand, the PHR for panel #2 can be triggered / sent even when the inhibit timer for panel #1 is not started.

[0111] exist Figure 4CIn the example, if the PHR for panel #1 is sent, the inhibit timer for panel group #a to which panel #1 belongs is started again. Before the inhibit timer expires, the PHR for panels #1 and #2 included in panel group #a is not triggered. In this example, after the inhibit timer expires, the PHR for panel #2 is triggered / sent.

[0112] According to the second embodiment described above, the UE can appropriately trigger the transmission of the panel-specific PHR based on the prohibit timer.

[0113] <Third embodiment>

[0114] The third embodiment relates to a periodic timer (eg, phr-PeriodicTimer).

[0115] With respect to the panel-specific PHR, the periodic timer may also satisfy at least one of the following:

[0116] Embodiment 3.1: A periodic timer is maintained (or utilized) for all panels,

[0117] Embodiment 3.2: A periodic timer is maintained (or utilized) for a panel,

[0118] Implementation 3.3: A periodic timer is maintained (or utilized) for a panel group.

[0119] In the case of implementation 3.1, if the periodic timer expires, the UE may also trigger a panel-specific PHR for all panels.

[0120] In the case of implementation mode 3.1, the panel-specific PHR for a certain panel may also be triggered when the triggering event of (5) of implementation mode 1.1 occurs. In implementation mode 3.1, the PHR triggered by the triggering event of the above (5) (the PHR may also be called a periodic PHR) may also be a PHR for all panels. If a panel-specific PHR (panel-specific PHR MAC CE) for any panel is sent, the above-mentioned periodic timer may also be restarted. The above-mentioned periodic timer may also be restarted only when the periodic PHR is sent. According to implementation mode 3.1, there is no need to manage multiple periodic timers, thereby reducing the complexity of the UE.

[0121] In the case of implementation 3.2, if the periodic timer for a certain panel expires, the UE may also trigger a panel-specific PHR for the panel.

[0122] In the case of implementation 3.2, an independent periodic timer is used for each panel. A panel-specific PHR for a certain panel may also be triggered when the triggering event of (5) of implementation 1.1 for the panel occurs. If a panel-specific PHR (panel-specific PHR MAC CE) for a certain panel is sent, the periodic timer for the panel may also be started again. According to implementation 3.2, PHR for each panel can be appropriately sent periodically.

[0123] In the case of implementation 3.3, if the periodic timer for a certain panel group expires, the UE may also trigger a panel-specific PHR for the panel group (or any panel belonging to the panel group).

[0124] In the case of implementation mode 3.3, an independent periodic timer is used for each panel group. The panel-specific PHR for a panel of a certain panel group may also be triggered when the trigger event (5) of implementation mode 1.1 for the panel group occurs. If a panel-specific PHR (panel-specific PHR MAC CE) for any panel of a certain panel group is sent, the periodic timer for the panel group may also be started again. According to implementation mode 3.3, the periodic timer is shared in the panel group, and the panel-specific PHR can be sent after the periodic timer has elapsed since the last panel-specific PHR in the panel group was sent. That is, it is possible to suppress the excessive sending of panel-specific PHRs based on the periodic timer.

[0125] In addition, for Embodiments 3.2 and 3.3, as described in Embodiment 3.1, a configuration may be adopted in which the periodic timer is restarted only when a periodic PHR is transmitted.

[0126] Figure 5A 5B is a diagram showing an example of control related to the periodic timer according to the third embodiment. Figure 5A 5B shows the case where the UE uses the periodic timer of implementation mode 3.1 respectively. In this example, it is assumed that the UE has four panels (panels #1-#4). PHRs related to these four panels are sent through periodic PHRs. In addition, in the following figures, a simple description such as "PHR" can also mean any PHR (either a periodic PHR or a PHR other than this).

[0127] Figure 5A FIG. 4 shows the case where the periodic timer is restarted by any panel-specific PHR transmission. Figure 5AIn this example, if the PHR for panel #1 is sent, the periodic timer starts again. In this example, before the periodic timer expires, the PHR for panel #2 is sent and the periodic timer starts again. If the periodic timer expires, the periodic PHR for all panels is triggered / sent.

[0128] exist Figure 5B In FIG. 1 , a situation is shown where the periodic timer is restarted only by periodic PHR transmission. Figure 5B In the example, even if a panel-specific PHR other than the periodic PHR is sent before the periodic timer expires (in this example, the PHR for panel #2 is triggered by other triggering events), the periodic timer will not be started again and will continue to operate.

[0129] Fig. 6A and 6B is a diagram showing another example of control related to the periodic timer of the third embodiment. Fig. 6A 6B and 6B show the situation where the UE uses the periodic timer of implementation modes 3.2 and 3.3 respectively. Figure 6B , imagine that panel group #a includes panels #1 and #2.

[0130] exist Fig. 6A In the example, if the PHR for panel #1 is sent, the periodic timer for panel #1 is started again, and if the periodic timer expires, the periodic PHR for panel #1 is triggered / sent. In addition, if the PHR for panel #2 is sent, the periodic timer for panel #2 is started again, and if the periodic timer expires, the periodic PHR for panel #2 is triggered / sent. The periodic timer for panel #1 and the periodic timer for panel #2 act independently.

[0131] exist Figure 6B In this example, if the PHR for panel #1 is sent, the periodic timer for panel group #a to which panel #1 belongs is started again. In this example, before the periodic timer expires, the PHR for panel #2 is sent, and the periodic timer for panel group #a to which panel #2 belongs is started again. If the periodic timer expires, the periodic PHR for panels #1 and #2 included in panel group #a is triggered / sent.

[0132] According to the third embodiment described above, the UE can appropriately trigger the transmission of the panel-specific PHR based on a periodic timer.

[0133] <Other>

[0134] In each of the above-mentioned embodiments, considering the reduction of signaling overhead, the reduction of UE complexity, etc., at least one of the same reporting quantity, the same parameters, and the same timer may be used for more than one panel or more than one panel group.

[0135] For example, in the first embodiment, a panel group (or multiple panels) may also share the same PHR. In other words, the PHR reported for a panel group CMAX , PH, P-MPR, etc. can also be applied to all panels in the panel group.

[0136] In the second or third embodiment, a panel group (or a plurality of panels) may also share the same inhibit timer / the same periodic timer.

[0137] Whether a panel group (or multiple panels) share the same PHR (or P CMAX Or PH or P-MPR or prohibit timer or periodic timer), can be set to the UE through high-layer (for example, RRC) signaling, can be predetermined by the specification, and can also be determined by the UE capability.

[0138] The above-mentioned embodiments can be applied when the UE reports specific capability information, or when the UE is configured with specific information associated with the above-mentioned embodiments through high-layer signaling. When the specific capability information is not reported or the specific information is not configured, the UE may also use the PHR sending method of Rel.15 / 16.

[0139] For example, the specific capability information may be information indicating that the UE supports at least one of a panel-specific PHR, a prohibition timer for the PHR of the panel, and a periodic timer for the PHR of the panel.

[0140] For example, the specific information may be information indicating that at least one of the panel-specific PHR, the PHR prohibition timer for the panel, and the PHR periodic timer for the panel is activated.

[0141] (Wireless Communication System)

[0142] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0143] Figure 71 is a diagram showing an example of a schematic structure of a wireless communication system involved in one embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), the fifth generation mobile communication system New Radio (5G NR), and the like.

[0144] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA))) and NR (E-UTRA-NR Dual Connectivity (E-UTRA-NR Dual Connectivity (EN-DC))), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC))), etc.

[0145] In EN-DC, the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (Secondary Node (SN)). In NE-DC, the base station (gNB) of NR is the MN, and the base station (eNB) of LTE (E-UTRA) is the SN.

[0146] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0147] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The configuration and number of each cell and user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as base stations 10.

[0148] The user terminal 20 may be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of component carriers (CC) and dual connectivity (DC).

[0149] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also be equivalent to a frequency band higher than FR2.

[0150] Furthermore, the user terminal 20 may perform communication in each CC using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0151] Multiple base stations 10 may also be connected via wired (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to a relay station (relay) may also be referred to as an IAB node.

[0152] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0153] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0154] In the wireless communication system 1, a wireless access method based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and the uplink (UL), cyclic prefix OFDM (CP-OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. may be used.

[0155] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the radio access schemes for UL and DL.

[0156] As downlink channels, the wireless communication system 1 may use a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc.

[0157] In addition, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH))), a random access channel (Physical Random Access Channel (PRACH)) and the like can also be used in the wireless communication system 1.

[0158] User data, high-layer control information, system information block (SIB), etc. are transmitted through PDSCH. User data, high-layer control information, etc. can also be transmitted through PUSCH. In addition, master information block (MIB) can also be transmitted through PBCH.

[0159] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of the PDSCH and the PUSCH.

[0160] In addition, the DCI for scheduling the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be replaced by DL data, and the PUSCH may also be replaced by UL data.

[0161] In the detection of PDCCH, the control resource set (CORESET) and the search space can also be used. CORESET corresponds to the resources for searching DCI. The search space corresponds to the search area and search method of PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space setting.

[0162] A search space may also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be interchangeable.

[0163] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted through PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted through PRACH.

[0164] In the present disclosure, downlink, uplink, etc. may be expressed without the word “link.” In addition, various channels may be expressed without the word “physical” at the beginning.

[0165] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. As DL-RS, in the wireless communication system 1, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0166] The synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as SS / PBCH block, SS block (SSB), etc. In addition, SS, SSB, etc. may also be referred to as reference signals.

[0167] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0168] (Base Station)

[0169] Figure 8 1 is a diagram showing an example of a structure of a base station involved in one embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may each be provided with more than one.

[0170] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also assumed that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0171] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0172] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc. using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be sent as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting, release, etc.) of communication channels, state management of the base station 10, management of wireless resources, etc.

[0173] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0174] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0175] The transmitting / receiving antenna 130 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0176] The transmitting and receiving unit 120 may also transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.

[0177] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0178] The sending and receiving unit 120 (sending processing unit 1211), for example, may also perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. on the data and control information obtained from the control unit 110 to generate a bit string to be sent.

[0179] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), discrete Fourier transform (Discrete Fourier Transform (DFT)) processing (as needed), inverse fast Fourier transform (Inverse Fast Fourier Transform (IFFT)) processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0180] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0181] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0182] The sending and receiving unit 120 (receiving processing unit 1212) can also apply analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to obtain user data, etc.

[0183] The transmitting and receiving unit 120 (measuring unit 123) may also implement measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (Radio Resource Management (RRM)) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., reference signal received power (Reference Signal Received Power (RSRP))), received quality (e.g., reference signal received quality (Reference Signal Received Quality (RSRQ)), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio (SINR)), signal to noise ratio (Signal to Noise Ratio (SNR))), signal strength (e.g., received signal strength indicator (Received Signal Strength Indicator (RSSI))), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0184] The transmission path interface 140 can also send and receive signals (return signaling) between devices included in the core network 30, other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0185] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission and reception unit 120 , the transmission and reception antenna 130 , and the transmission path interface 140 .

[0186] In addition, the transmitting and receiving unit 120 may also send information related to a trigger event related to a certain panel to the user terminal 20. The information may also be at least one of phr-ProhibitTimer, phr-PeriodicTimer, phr-Tx-PowerFactorChange, a threshold value related to P-MPR ((3) of the first embodiment), etc. The information may be set together with the associated panel (for example, the panel ID) or may not be included in the setting information of the PHR.

[0187] In addition, the transceiver unit 120 may also receive a Medium Access Control (MAC) control element (panel-specific PHR MAC CE) related to a Power Headroom Report (PHR) associated with the panel, which is triggered based on the information.

[0188] The triggering event may also include an event such as the expiration of a periodic timer associated with the panel.

[0189] (User Terminal)

[0190] Fig. 9 2 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. In addition, the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may each be provided with one or more.

[0191] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0192] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0193] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 220.

[0194] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0195] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured as a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0196] The transmitting / receiving antenna 230 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0197] The transmitting and receiving unit 220 may also receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0198] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0199] The sending and receiving unit 220 (sending processing unit 2211) can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0200] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0201] In addition, whether to apply DFT processing may also be based on the setting of transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is valid (enabled), the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting and receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the above-mentioned transmission processing without performing DFT processing.

[0202] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0203] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 230 .

[0204] The sending and receiving unit 220 (receiving processing unit 2212) can also apply analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0205] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to the received signal. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, 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 also be output to the control unit 210.

[0206] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0207] In addition, the control unit 210 may also trigger a power headroom report (PHR) associated with a certain panel when a trigger event related to the panel occurs.

[0208] The sending and receiving unit 220 may also send a Medium Access Control (MAC) control element related to the triggered PHR.

[0209] The trigger event may also include an event in which, after the last transmission of a panel-specific PHR associated with the panel, the path loss for at least one activated serving cell of any MAC entity used as a path loss reference for uplink transmissions via the panel changes by exceeding a certain threshold.

[0210] The triggering event may also include an event where the Power Management Maximum Power Reduction (P-MPR) of the panel changes by exceeding a certain threshold after the last transmission of a panel-specific PHR associated with the panel.

[0211] The triggering event may also include an event where an inhibit timer associated with the panel expires or has expired.

[0212] The triggering event may also include an event such as the expiration of a periodic timer associated with the panel.

[0213] The control unit 210 may also trigger the PHR for all panels if the periodic timer expires.

[0214] The control unit 210 may also restart the periodic timer when the MAC CE triggered based on the periodic timer is sent, and not restart the periodic timer when the MAC CE triggered based on other triggering events is sent.

[0215] (Hardware Structure)

[0216] In addition, the block diagram used in the description of the above-mentioned embodiment shows a block of a functional unit. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more devices that are physically or logically separated can be directly or indirectly (for example, by wired, wireless, etc.) connected and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0217] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending function may also be referred to as a transmitting unit, a transmitter, etc. Any one of them is as described above, and the implementation method is not particularly limited.

[0218] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Fig.101001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0219] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. can be used interchangeably. The hardware structure of the base station 10 and the user terminal 20 can be configured to include one or more of the devices shown in the figure, or to exclude some of the devices.

[0220] For example, only one processor 1001 is shown, but there may be multiple processors. In addition, the processing may be performed by one processor, or may be performed by two or more processors simultaneously, sequentially, or in other ways. In addition, the processor 1001 may also be implemented by one or more chips.

[0221] The functions of the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0222] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), the sending and receiving unit 120 (220), etc. may also be implemented by the processor 1001.

[0223] In addition, the processor 1001 reads the program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that causes a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same can be implemented for other functional blocks.

[0224] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0225] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray (Blu-ray) (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other suitable storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0226] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. may also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) may also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0227] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, a light emitting diode (LED) lamp, etc.). In addition, the input device 1005 and the output device 1006 may also be an integrated structure (e.g., a touch panel).

[0228] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0229] In addition, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA), and the hardware may be used to implement a part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0230] (Variation Example)

[0231] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, channels, code elements, and signals (signals or signaling) may also be replaced with each other. In addition, a signal may also be a message. A reference signal may also be referred to as RS, and may also be referred to as a pilot, a pilot signal, etc. depending on the standard applied. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0232] A wireless frame may also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) constituting a wireless frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is not dependent on a parameter set (numerology).

[0233] Here, the parameter set may also be a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of a subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, a wireless frame structure, a specific filter processing performed by a transmitter and receiver in the frequency domain, a specific windowing processing performed by a transmitter and receiver in the time domain, and the like.

[0234] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0235] A time slot may also include multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as a PDSCH (PUSCH) mapping type B.

[0236] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective names. In addition, time units such as frames, subframes, time slots, mini-time slots, and symbols in the present disclosure may also be interchangeable.

[0237] For example, a subframe may be referred to as a TTI, a plurality of consecutive subframes may be referred to as a TTI, and a time slot or a mini time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0238] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station schedules each user terminal to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited to this.

[0239] TTI may also be a transmission time unit for a data packet (transport block), a code block, a code word, etc. that has been channel-coded, and may also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0240] In addition, when a time slot or a mini time slot is called TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) can also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling can also be controlled.

[0241] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub time slot, a time slot, etc.

[0242] In addition, a long TTI (e.g., normal TTI, subframe, etc.) may be replaced by a TTI having a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) may be replaced by a TTI having a TTI length shorter than that of the long TTI and longer than 1 ms.

[0243] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0244] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks, respectively.

[0245] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0246] In addition, a resource block may be composed of one or more resource elements (RE). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0247] Bandwidth Part (BWP) (also referred to as partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, common RBs may also be identified by the index of the RB relative to the common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0248] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured in one carrier.

[0249] At least one of the configured BWPs may be activated, and the UE may not assume that it transmits or receives a specific channel / signal other than the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced by "BWP".

[0250] In addition, the above-mentioned structures such as radio frames, subframes, time slots, mini-time slots and symbols are only examples. For example, the number of subframes included in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.

[0251] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0252] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0253] Information, signals, etc. described in this disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0254] Furthermore, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0255] The input and output information, signals, etc. may be stored in a specific location (e.g., a memory), or may be managed using a management table. The input and output information, signals, etc. may be overwritten, updated, or appended. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be sent to other devices.

[0256] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB)), etc.), Medium Access Control (MAC) signaling), other signals or a combination thereof.

[0257] In addition, physical layer signaling may also be referred to as layer 1 / layer 2 (Layer 1 / Layer 2 (L1 / L2)) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as an RRC message, such as an RRC connection establishment (RRC Connection Setup) message, an RRC connection reconstruction (RRC Connection Reconfiguration) message, etc. In addition, MAC signaling may also be notified using, for example, a MAC control element (MACControl Element (CE)).

[0258] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0259] The determination can be made by a value represented by a bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a specific value).

[0260] Whether software is called software, firmware, middle-ware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software modules, applications, software applications, software packages, routines, sub-routines, objects, executable files, execution threads, procedures, functions, etc.

[0261] In addition, software, instructions, information, etc. may also be sent and received via a transmission medium. For example, when software is sent from a website, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0262] The terms "system" and "network" used in the present disclosure can be used interchangeably. "Network" may also refer to a device (eg, a base station) included in the network.

[0263] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)", "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" can be used interchangeably.

[0264] In the present disclosure, terms such as "Base Station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" can be used interchangeably. There are also cases where base stations are referred to by terms such as macro cell, small cell, micro-micro cell, and micro-micro cell.

[0265] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0266] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0267] There are also cases where a mobile station is referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client or several other appropriate terms.

[0268] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. In addition, at least one of the base station and the mobile station may also be a device carried in a mobile body, a mobile body, etc. The mobile body may be a means of transportation (e.g., a vehicle, an airplane, etc.), a mobile body that moves in an unmanned manner (e.g., a drone, an autonomous driving vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0269] In addition, the base station in the present disclosure may also be replaced by a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple user terminals (for example, it may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be set as a structure in which the user terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. may also be replaced by side channels.

[0270] Likewise, the user terminal in the present disclosure may be replaced by a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0271] In the present disclosure, the actions are assumed to be performed by the base station, and sometimes by its upper node (uppernode) depending on the situation. Obviously, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal can be performed by the base station, one or more network nodes other than the base station (for example, considering the Mobility Management Entity (MME)), the Serving-Gateway (S-GW), etc., but not limited to these) or a combination thereof.

[0272] The various methods / implementations described in this disclosure may be used individually or in combination, and may be used in a switched manner as the method is executed. In addition, the processing procedures, sequences, flow charts, etc. of the various methods / implementations described in this disclosure may be reversed in order as long as they are not contradictory. For example, for the methods described in this disclosure, the elements of various steps are presented in an illustrative order, but are not limited to the specific order presented.

[0273] The various modes / implementations described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER3G, 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)) (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (Ultra Mobile Broadband (UMB)), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems expanded based on them. In addition, multiple systems can also be applied in combination (for example, LTE or LTE-A, combination with 5G, etc.).

[0274] The phrase “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on”.

[0275] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not fully define the amount or order of these elements. These terms can be used in this disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to the first and second elements does not mean that only two elements can be used or that the first element must take precedence over the second element in some form.

[0276] The term "determining" used in this disclosure may include a variety of actions. For example, "determining" may also refer to situations where judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc. are considered to be "determining".

[0277] In addition, "judgment (decision)" may also be a situation where receiving (for example, receiving information), sending (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc. are regarded as making a "judgment (decision)".

[0278] In addition, "judgment (decision)" can also be regarded as a situation where resolving, selecting, choosing, establishing, comparing, etc. are regarded as a situation where "judgment (decision)" is performed. That is, "judgment (decision)" can also be regarded as a situation where some actions are regarded as a situation where "judgment (decision)" is performed.

[0279] In addition, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)” and so on.

[0280] The terms "connected", "coupled", or all their variations used in this disclosure refer to all direct or indirect connections or combinations between two or more elements, and may include the situation where one or more intermediate elements exist between two elements that are "connected" or "coupled" to each other. The combination or connection between elements may be physical, logical, or a combination thereof. For example, "connection" may also be replaced by "access".

[0281] In the present disclosure, when two elements are connected, it is possible to consider being "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0282] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other". In addition, the term may also mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted in the same manner as "different".

[0283] When the terms “include,” “including,” and variations thereof are used in the present disclosure, these terms have an inclusive meaning, similar to the term “comprising.” Furthermore, the term “or” used in the present disclosure does not have an exclusive OR meaning.

[0284] In the present disclosure, when an article is added by translation like a, an, and the in English, for example, the present disclosure may also include a case where the noun following the article is in plural form.

[0285] The invention involved in the present disclosure has been described in detail above, but it is obvious to those skilled in the art that the invention involved in the present disclosure is not limited to the embodiments described in the present disclosure. The invention involved in the present disclosure can be implemented as a modified and altered mode without departing from the gist and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for the purpose of illustrative description and does not have any limiting meaning on the invention involved in the present disclosure.

Claims

1. A terminal having: The sending unit reports information related to the number of panels using the capability information; a receiving unit, receiving a higher layer signaling related to the number of panels notified by including in a media access control element MAC CE; and a control unit, triggering a power headroom report (PHR) associated with the plurality of panels when at least one power management maximum power reduction (P-MPR) within the plurality of panels notified through the high-layer signaling is higher than a threshold, The sending unit sends the MAC CE related to the triggered PHR, and the MAC CE includes information about the PHR of each of the multiple panels of the number of panels notified through the high-layer signaling, and information about the maximum output power of each of the multiple panels.

2. A wireless communication method of a terminal, comprising: Steps for reporting information related to the number of panels using capacity information; The step of receiving higher layer signaling related to the number of panels notified by including in a medium access control element MAC CE; In case at least one power management maximum power reduction (P-MPR) within a plurality of panels of the number of panels notified through the higher layer signaling is higher than a threshold, a step of triggering a power headroom report (PHR) associated with the plurality of panels; and The step of sending the MAC CE related to the triggered PHR, wherein the MAC CE includes information related to the PHR of each of the multiple panels of the number of panels notified through the high-layer signaling, and information related to the maximum output power of each of the multiple panels.

3. A system having a terminal and a base station, The terminal has: The sending unit reports information related to the number of panels using the capability information; a receiving unit, receiving a higher layer signaling related to the number of panels notified by including in a media access control element MAC CE; and a control unit, triggering a power headroom report (PHR) associated with the plurality of panels when at least one power management maximum power reduction (P-MPR) within the plurality of panels notified through the high-layer signaling is higher than a threshold, The sending unit sends the MAC CE related to the triggered PHR, wherein the MAC CE includes information about the PHR of each of the plurality of panels of the number of panels notified through the high-layer signaling, and information about the maximum output power of each of the plurality of panels. The base station has: a receiving unit, receiving a report using the capability information; and A sending unit, sending the high-level signaling, The receiving unit further receives the MAC CE.

Images