Terminal, wireless communication method and base station

Abstract

A terminal involved in one embodiment of the present invention comprises: a control unit, which determines activation or deactivation of a panel based on measurement results of a reference signal or performance of a downlink channel; and a sending unit, which sends a report for activating or deactivating the panel, or a report requesting activation or deactivation of the panel.

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 (for example, also referred to as the fifth generation mobile communication system (5G), 5G+(plus), New Radio (NR), 3GPP Rel. 15 and later, etc.) are also being studied.

[0004] In the existing LTE system (e.g., 3GPP Rel.8-14), the user terminal (User Equipment (UE)) uses at least one of the UL data channel (e.g., Physical Uplink Shared Channel (PUSCH)) and the UL control channel (e.g., Physical Uplink Control Channel (PUCCH)) to send uplink control information (Uplink Control Information (UCI)).

[0005] Prior art literature

[0006] Non-patent literature

[0007] 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

[0008] Problems to be solved by the invention

[0009] Under study: In future wireless communication systems (e.g., NR), the UE determines the DL receive beam (spatial domain receive filter) and the UL transmit beam (spatial domain transmit filter) based on information notified from the base station. In addition, the UE is studying switching multiple UE panels (panels, antenna panels) to perform DL reception and UL transmission.

[0010] However, it is unclear how the UE controls switching of the panel (eg, activation / deactivation). If activation / deactivation of the panel cannot be properly controlled, there is a concern that system performance may be degraded, such as increased power consumption and reduced beam gain.

[0011] 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 controlling switching of panels.

[0012] Solutions to Solve Problems

[0013] A terminal involved in one embodiment of the present invention is characterized in that it has: a control unit that determines the activation or deactivation of a panel based on the measurement result of a reference signal or the performance of a downlink channel; and a sending unit that sends a report for activating or deactivating the panel, or a report requesting the activation or deactivation of the panel.

[0014] Effects of the Invention

[0015] According to one aspect of the present disclosure, it is possible to appropriately control switching of panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram showing panel usage of UE in 3GPP Rel.15.

[0017] Figure 2A as well as Figure 2B This is a diagram showing an example of the A / D reporting operation of the panel determined by the UE.

[0018] Figure 3Aas well as Figure 3B This is a diagram showing an example of the report content of the A / D of the panel in the CSI report.

[0019] Figure 4A as well as Figure 4B This is a diagram showing an example of the report content of the A / D of the panel in the MAC CE.

[0020] Figure 5A as well as Figure 5B This is a diagram showing another example of the report content of the A / D of the panel in the CSI report.

[0021] Fig. 6A as well as Figure 6B This is a diagram showing another example of the report content of the A / D of the panel in the MAC CE.

[0022] Fig. 7A as well as Figure 7B This is a diagram showing another example of the report content of the A / D of the panel in the MAC CE.

[0023] Figure 8 This is a diagram showing an example of a method for determining a panel to be deactivated.

[0024] Fig. 9 This is a diagram showing an example of a method for determining a panel to be activated.

[0025] Figure 10A-10C This is a diagram showing an example of the report content of the A / D of the panel in the MAC CE sent by the UE and the indication content of the A / D of the panel in the MAC CE sent by the base station.

[0026] Fig.11 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0027] Fig.12 This is a diagram showing an example of the structure of a base station involved in one embodiment.

[0028] Fig.13 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0029] Fig.14 This is a diagram showing an example of the hardware configuration of a base station and a user terminal involved in one embodiment. DETAILED DESCRIPTION

[0030] Figure 1This is a diagram showing the panel usage of a UE in 3GPP Rel.15. In Rel.15, the selection / usage of the uplink (UL) panel of a user terminal (User Equipment (UE)) is transparent to the network (NW, e.g., base station, gNB). The UE uses only one panel at a time in UL transmission and does not use multiple panels simultaneously. Figure 1 In the example shown, the UE uses Panel#1 in UL transmission. In addition, the UE can also dynamically switch the panel to be used through an implicit method (notification).

[0031] However, in Rel.15, in order to support beam management, the UE always keeps the power of multiple panels turned on. Since the power of the panels is always turned on, when the communication speed of the panel in use is reduced due to obstacles, etc., the UE can quickly switch to other panels, thereby improving performance. However, since the power of multiple panels is always turned on, there is a problem of high power consumption and low efficiency.

[0032] In order to optimize the power consumption of the UE, it is effective to deactivate panels that are not used by the UE. In Rel.16, the activation / deactivation of the UE panel depends on the UE implementation and is not recognized by the base station (e.g., gNB) (not visible from the base station (transparent)). There is no mechanism that supports the effective activation / deactivation of the UE panel and aligns the activation / deactivation information of the UE panel between the base station and the UE.

[0033] If the UE panel cannot be activated / deactivated properly, there is a concern that system performance may be degraded, such as increased power consumption and reduced beam gain.

[0034] Therefore, the inventors of the present invention studied a control method for activation / deactivation of a UE panel and came up with the present embodiment.

[0035] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods and methods involved in each embodiment can be applied separately or in combination. In addition, in the present disclosure, "A / B" can also be replaced by "at least one of A and B". In addition, "notification" in the present disclosure can also be replaced with "instruction", "setting", and "sending".

[0036] Below, the "panel" of the UE in the present disclosure can also be replaced with the "Reference Signal (RS)) port group", "Demodulation Reference Signal (DMRS)) port group", "Sounding Reference Signal (SRS)) port group", "RS resource group", "DMRS resource group", "SRS resource group", "beam group", "Transmission Configuration Indication (TCI) status group", "spatial relationship group", "SRS Resource Indicator (SRS Resource Indicator: SRI) group", or "antenna port group".

[0037] Activation in the present disclosure may also mean turning on the power of the panel or making the panel in an activated state. The activated state may also mean: a state in which blind detection of a downlink control channel (Physical Downlink Control Channel (PDCCH)) can be performed in a set search space, a state in which a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) scheduled by downlink control information (Downlink Control Information (DCI)) etc. can be received from the NW, and a state in which a UL data channel (e.g., Physical Uplink Shared Channel (PUSCH)) scheduled by DCI etc. can be sent from the NW.

[0038] In addition, deactivation in the present disclosure may also mean disconnecting the power supply of the panel or putting the panel in a deactivated state. The deactivated state may also mean at least one of: a state in which blind detection of PDCCH is not requested in a set search space, a state in which PDSCH scheduled by DCI or the like is not requested to be received from NW, and a state in which PUSCH scheduled by DCI or the like is not requested to be sent from NW.

[0039] In addition, the term "activate" in the present disclosure may also be replaced by activation, activation, update, or upgrade. The term "deactivate" in the present disclosure may also be replaced by deactivation, deactivation, deactivation, or stop.

[0040] (Wireless Communication Method)

[0041] The activation / deactivation of the UE panel may also be controlled (or determined, judged) by the UE and reported (or notified) to the base station (reporting operation A). The activation / deactivation of the UE panel may also be reported by the UE and confirmed (approved) by the base station (reporting operation B).

[0042] <Report Operation A>

[0043] Figure 2A This shows an example of a situation in which the UE controls activation / deactivation (hereinafter also referred to as A / D) of a panel of its own terminal and notifies the base station of information on activation / deactivation of the panel.

[0044] For example, the UE determines activation / deactivation of a panel of the terminal and activates / deactivates the determined panel. In addition, the UE reports information related to the panel to be activated / deactivated to the base station. After a specific period has passed since the information related to the activation / deactivation of the panel was reported to the base station, the UE performs an operation corresponding to the panel to be activated / deactivated.

[0045] The specific period may also be referred to as an offset period. The offset period may also be defined by a specific value. The specific value may also be changed according to the subcarrier spacing set in the channel (e.g., PUCCH / PUSCH) used in the report of information related to activation / deactivation (hereinafter also referred to as A / D report).

[0046] The specific value may also be represented by a first value (eg, X) and a second value representing the number of time slots (eg, N slot subframe,μ ). Figure 2A In the specification, the case where the offset period is X is indicated. X may also be pre-defined in the specification. Alternatively, X may also be determined based on the UE capability (e.g., UE capability). In this case, UE capability information (e.g., X corresponding to the UE capability) may also be reported from the UE to the base station. Alternatively, X may also be notified to the UE from the base station using at least one of the higher layer signaling and the DCI. For example, the base station may also notify the UE of X based on the UE capability information reported from the UE.

[0047] For example, when the UE reports information related to activation / deactivation in time slot #n, the UE performs an operation corresponding to the panel that performs activation / deactivation from the first time slot after time slot #n+X. The time slot may also be replaced by a subframe, a subslot, or a symbol. The operation corresponding to the panel that performs activation may also be replaced by an operation using the panel that performs activation. The operation corresponding to the panel that performs deactivation may also be replaced by an operation that does not use the panel that performs deactivation.

[0048] In the case of reporting activation of the panel, the UE may also control so that an operation (or communication operation) using the panel to be activated is performed after an offset period (e.g., X) has passed. In the case of reporting deactivation of the panel, the UE may also control so that an operation using the panel to be deactivated is not performed (or stopped) after an offset period has passed.

[0049] The operation utilizing the panel (or, communication operation) refers to the sending processing / receiving processing utilizing the panel, for example, it may also mean at least one of the blind detection operation of PDCCH in the set search space, the receiving operation of PDSCH scheduled in NW through DCI, etc., the sending operation of PUSCH scheduled in NW through DCI, etc., and the sending operation of PUCCH.

[0050] <Report Operation B>

[0051] Figure 2B An example of a situation in which the UE reports (or requests) the activation / deactivation of a panel of the terminal to the base station, and activates / deactivates the panel after confirmation (or approval) by the base station. The UE may also be configured as follows: the UE reports the panel to be activated / deactivated to the base station, but cannot activate / deactivate the panel until confirmation / approval is received from the base station.

[0052] For example, the UE determines activation / deactivation of a panel of the terminal (for example, a panel to be activated / deactivated), and reports (or requests) the determined activation / deactivation of the panel to the base station. The base station may also send information (hereinafter also referred to as approval information) notifying the UE of approval (or trigger / request) of activation / deactivation of the panel based on the report (or request) from the UE.

[0053] After a specific period has passed since the UE received the approval information sent by the base station, the UE performs an operation corresponding to the panel that is activated / deactivated. The specific period may also be referred to as an offset period. Figure 2B Indicates that the offset period is 3N slot subframe,μ (+X) In addition, the offset period is not limited to 3N slot subframe,μ , can also be set to other values.

[0054] For example, in the case where the UE reports information related to activation / deactivation in time slot #n, the UE slot subframe,μ+(X) and the operation corresponding to the panel to be activated / deactivated is performed from the first time slot after +(X). The time slot may also be replaced by a subframe, a subslot or a symbol. The operation corresponding to the panel to be activated may also be replaced by an operation using the activated panel. The operation corresponding to the panel to be deactivated may also be replaced by an operation not using the deactivated panel.

[0055] When activation of the panel is approved, the UE may also control so that an operation (or communication operation) using the panel for which activation is approved is performed after an offset period (e.g., X) has passed. When deactivation of the panel is approved, the UE may also control so that an operation using the panel for which deactivation is approved is not performed (or stopped) after an offset period has passed.

[0056] (First method)

[0057] In the first aspect, an example of an operation in which the UE reports information related to activation / deactivation of the panel of its own terminal is described.

[0058] The information related to the activation / deactivation of the panel may be either the information that the UE activates / deactivates the panel (the above-mentioned reporting operation A) or the information that the UE requests the activation / deactivation of the panel (for example, the above-mentioned reporting operation B).

[0059] The information of UE activating / deactivating a panel may also be at least one of information of the panel to be activated and information of the panel to be deactivated. The information of UE requesting panel activation / deactivation may also be at least one of information of the panel to be activated and information of the panel to be deactivated.

[0060] <UE report content>

[0061] The UE may also report (A / D report) information related to activation / deactivation of each panel. For example, the UE may also perform A / D reports for one or more panels configured in the terminal. When multiple panels are configured in the UE, the UE performs A / D reports for each panel.

[0062] In this case, the following structure may be adopted: a specific bit (for example, 1 bit) is set for each panel, and the UE notifies activation / deactivation of each panel in the form of a bitmap.

[0063] Alternatively, the UE may also perform an A / D report for a specific panel. For example, the UE may also perform an A / D report for a specific panel among the panels set in the terminal. The specific panel may also be a panel that performs activation / deactivation switching (or, change, update, upgrade).

[0064] In this case, the following structure may be adopted: the UE notifies information related to identification information of a specific panel (for example, panel ID) and information related to activation / deactivation of the specific panel (for example, 1 bit).

[0065] <UE report signaling and format>

[0066] The A / D report of the panel reported from the UE can be triggered by either the base station or the UE.

[0067] [Based on base station trigger]

[0068] The UE may also control (e.g., trigger) the A / D report of the panel based on an indication (or request, trigger) from the base station. The reporting operation of activation / deactivation of the panel may also utilize the same method (or mechanism) as the structure / activation / trigger of the channel state information (CSI) report.

[0069] For example, the UE may also include the A / D report in the CSI report and notify the base station. In this case, the A / D report may also be performed using an uplink channel (e.g., PUCCH / PUSCH). The CSI report may also be at least one of a periodic CSI (P-CSI) report, a semi-persistent CSI (SP-CSI) report, and an aperiodic CSI (A-CSI) report.

[0070] Figure 3A This is a diagram showing an example of report content when the UE reports information related to activation / deactivation of each panel as a CSI report. Here, it is shown that the UE includes information of the bitmap indicating activation / deactivation of each panel in a specific CSI report (e.g., CSI report #n) and reports it.

[0071] The size of the bitmap information (eg, bit width) may also be based on the number of panels (eg, N). panel Here, the bit width corresponding to the number of panels is set.

[0072] Figure 3B This figure shows an example of the report content when the UE reports the information related to the activation / deactivation of a specific panel as a CSI report. Here, it shows the situation where the UE includes the information indicating the specific panel ID (Panel ID) and the information indicating the activation / deactivation of the specific panel ID in a specific CSI report (for example, CSI report #n) and reports it.

[0073] In this specification, the panel ID may also be an RS group ID, an RS set ID, an antenna port ID, an antenna port group ID, an antenna port set ID, a group index of a group-based beam report, or a new ID.

[0074] The size (eg, bit width) of the information indicating the panel ID may also be based on the number of panels (eg, N panel Here, the following situation is shown: By Log2(N panel ) is used to define the size of the information indicating the panel ID, and the size of the information indicating activation / deactivation of a specific panel ID is defined by 1 bit. Of course, the content and size of the CSI report are not limited to this.

[0075] in addition, Figure 3A , Figure 3B The CSI report #n shown in can also be added as part of the existing CSI report. The existing CSI report can also be, for example, an L1-RSRP report or an SINR beam report.

[0076] Alternatively, CSI report #n may also be set or defined as a new type of CSI report. In the case where a priority is set in a CSI report, the priority of a CSI report (e.g., CSI report #n) containing information related to activation / deactivation of a panel may also be set higher than other CSI reports. Alternatively, the priority of CSI report #n may also be set to be the highest after a specific CSI report. The specific CSI report may also be a CSI report corresponding to at least one of an L1-RSRP report and an SINR beam report.

[0077] [Based on UE trigger]

[0078] The UE may also control (e.g., trigger) the panel's A / D reporting based on a specific condition (e.g., a specific event). That is, the UE may also trigger the panel's A / D reporting independently of an explicit indication (or request, trigger) from the base station. In this case, the UE may also report using MAC control information (MAC CE).

[0079] The specific condition may also be the expiration of a specific timer. Alternatively, the specific condition may also be at least one of a benchmark determined autonomously by the UE (UE execution or UE implementation), the reception power of the panel, and the reception quality of the panel.

[0080] The UE may also trigger an A / D report of the panel when a specific timer expires. The specific timer may be a timer set for periodic reporting (e.g., PeriodicReport-Timer) or a timer for other purposes. The specific timer may be defined in the specification or notified to the UE from the base station using high-layer signaling. When a report is triggered based on the expiration of a specific timer, the UE may also restart the specific timer.

[0081] The UE may also trigger A / D reporting of the panel if it decides to activate / deactivate the panel.

[0082] For example, consider a case where activation / deactivation of a panel is determined based on UE execution. In this case, the UE may also determine activation / deactivation of a panel based on UE execution and trigger an A / D report of the panel.

[0083] Alternatively, it is assumed that the activation / deactivation of the panel is determined based on a specific benchmark. In this case, when there is a panel that meets the specific benchmark or a certain panel meets the specific benchmark, the UE can also trigger the A / D report of the panel. The specific benchmark can also be, for example, whether the value of the received power (for example, RSRP) of the reference signal or beam received by the panel is below a specific value. In addition, the specific benchmark is not limited to this, and for example, the structure shown in the second method can also be appropriately used.

[0084] Figure 4A FIG. 1 is a diagram showing an example of the report content when the UE uses MAC CE to report information related to activation / deactivation of each panel. Figure 4A In the figure, it is shown that the bit (or bit field, field) indicating the activation / deactivation of each panel is set in the MAC CE.

[0085] Ai may also be a field used in the notification of activation / deactivation of panel ID#i. For example, Ai=1 may correspond to the activation of panel ID#i, and Ai=0 may correspond to the deactivation of panel ID#i. Alternatively, Ai=1 may correspond to the deactivation of panel ID#i, and Ai=0 may correspond to the activation of panel ID#i.

[0086] Figure 4B FIG. 1 is a diagram showing an example of the report content when the UE uses MAC CE to report information related to activation / deactivation of a specific panel. Figure 4B In FIG. 1 , it is shown that a bit (or a bit field) for specifying a specific panel ID and a bit used in notification of activation / deactivation of the specific panel ID are set in the MAC CE.

[0087] exist Figure 4B In the example, the bit field that specifies a specific panel ID corresponds to "Panel ID", and the bit field used in the notification of activation / deactivation of the specific panel ID corresponds to "A / D". The size of the bit field that specifies a specific panel ID may also be determined based on the number of panels set in the UE or the maximum number of panels that can be set.

[0088] exist Figure 4A , Figure 4B In FIG. 1 , it is shown that the bit field for the service cell ID and the bit field for the BWP ID are included in the MAC CE, but the structure of the MAC CE is not limited to this. For example, it may be a structure in which at least one of the bit field for the service cell ID and the bit field for the BWP ID is not included in the MAC CE.

[0089] <Changes>

[0090] exist Figure 3B , Figure 4B In the example, a case where one panel ID and activation / deactivation of the panel ID are reported as a specific panel is shown, but the present invention is not limited thereto. For example, activation / deactivation of multiple panel IDs may be reported as a specific panel. The number of panels reported by the UE may be defined in the specification or may be set to the UE from the base station using high-layer signaling or the like.

[0091] In this case, information on activation / deactivation corresponding to each panel may be reported separately, or information on activation / deactivation common to each panel may be reported.

[0092] Figure 5A This is a diagram showing an example of the report content when the UE reports information related to activation / deactivation of specific panels (here, panel ID#1 and panel ID#2) as a CSI report. Here, it is shown that the UE reports information representing multiple specific panel IDs and information representing activation / deactivation of the multiple specific panel IDs.

[0093] Figure 5B This is another example of a report content when the UE reports information related to activation / deactivation of specific panels (here, panel ID#1 and panel ID#2) as a CSI report. Here, it is shown that the UE reports information indicating multiple specific panel IDs separately and information indicating activation / deactivation of the multiple specific panel IDs in common.

[0094] Fig. 6AThis is a diagram showing an example of the report content when the UE uses MAC CE to report information related to the activation / deactivation of specific panels (here, panel ID#1 and panel ID#2). Here, the following situation is shown: in the MAC CE, bits (or bit fields) are respectively set to specify multiple specific panel IDs, and bits are respectively set to be used in the notification of activation / deactivation of the multiple specific panel IDs.

[0095] Figure 6B This is a diagram showing another example of the report content when the UE uses MAC CE to report information related to the activation / deactivation of specific panels (here, panel ID#1 and panel ID#2). Here, the following situation is shown: in the MAC CE, bits (or bit fields) that specify multiple specific panel IDs are set separately, and bits used in the notification of activation / deactivation of the multiple specific panel IDs are set in common.

[0096] In this way, by using different fields (e.g., A / D fields) to report each of the multiple panel IDs, it is possible to flexibly set A / D for each panel ID. On the other hand, by using a common field (e.g., A / D field) to report multiple panel IDs, it is possible to suppress an increase in overhead even when the number of reported panel IDs increases.

[0097] The activation / deactivation of the panel may also be controlled (e.g., reported) for each BWP group and CC group. For example, the activation / deactivation of the panel may be applied to more than one BWP group. In addition, the activation / deactivation of the panel may be applied to more than one CC group.

[0098] Information related to the BWP group / CC group may also be defined in a list and notified to the UE from the base station. For example, a list of one or more CCs and a list of one or more BWPs may also be set to the UE through high-layer signaling. Multiple lists (e.g., X lists) may also be set for the UE.

[0099] The activation / deactivation of a panel may also be applied to more than one CC or more than one BWP contained in the same list.

[0100] Information related to the list of BWP / CCs can also be notified from the UE to the base station using MAC CE. Figure 4A , Figure 4B In the CC list, the bit field used for the cell ID can be replaced by

[0101] The bit field used in the designation of the ID may be a bit field for BWP as in the BWP list.

[0102] Bit field used to specify ID (see Fig. 7A , 7B ). Thus, the A / D of the panel can be flexibly switched in units of specific BWP groups / CC groups.

[0103] (Second method)

[0104] In the second embodiment, an example of a criterion (or condition / parameter) when the UE reports information related to activation / deactivation of the panel of the terminal is described. At least one of the following criteria can also be applied to the first embodiment.

[0105] <Deactivation criteria>

[0106] The deactivated reference (criterion) may also be to deactivate at least one of reference 1 and reference 2.

[0107] [Deactivate benchmark 1]

[0108] The deactivation of the panel is based on the CSI-RS measurement result. The UE may also decide / judge the deactivation of the panel based on the CSI-RS measurement result.

[0109] For example, when it is determined that the panel is to be deactivated, the UE may also deactivate the panel and trigger a report of the deactivation of the panel (report operation A). Alternatively, when it is determined that the panel is to be deactivated, the UE may also trigger a report for requesting the deactivation of the panel (report operation B).

[0110] Deactivation reference 1 may also comply with any one of the following deactivation references 1-1 and 1-2. In addition, in the following description, CSI-RS may also be replaced by other signals (eg, synchronization signal block (SSB)). In addition, beam may also be replaced by CSI-RS or SSB.

[0111] [[Deactivate Baseline 1-1]]

[0112] If the measurement result (eg RSRP / SINR) of the best beam in a panel is smaller than a threshold value during a certain time period (time duration), the panel may also be deactivated. The time period may also be replaced by the duration.

[0113] [[Deactivate benchmark 1-2]]

[0114] If the average measurement result (RSRP / SINR) of X (eg, the best X) beams in a certain panel is smaller than a threshold value during a certain period of time, the panel may also be deactivated.

[0115] At least one of the time period, threshold, and X may be defined in the specification, or may be notified to the UE from the base station using high-layer signaling, or may be determined autonomously by the UE (executed by the UE). Other signals (e.g., synchronization signal blocks) may also be used instead of CSI-RS for measurement.

[0116] The UE may also measure the same CSI-RS resource through multiple panels at the same time or at different times, and identify whether the measurement result is lower than a threshold.

[0117] The deactivation criterion 1 may also be applied to a reference signal set (RS set) set for L1-RSRP / SINR measurement. Alternatively, the deactivation criterion 1 may also be applied to a reference signal set (RS set) set for beam reporting.

[0118] Alternatively, in deactivation criterion 1, when the UE recognizes / confirms the maximum permitted exposure (MPE), the UE may deactivate the panel corresponding to the spatial relation detected as the MPE.

[0119] [Deactivate benchmark 2]

[0120] The deactivation of the panel is based on the performance of the PDCCH / PDSCH. The UE may also decide / judge the deactivation of the panel based on the performance of the PDCCH / PDSCH. The deactivation criterion 2 may also follow any one of the following deactivation criterions 2-1 and 2-2.

[0121] [[Deactivation Baseline 2-1]]

[0122] If the performance of PDCCH / PDSCH / PUCCH / PUSCH in a panel is less than a threshold value during a certain time period, the panel can also be deactivated. For example, the performance can also be the block error rate (BLER). The BLER can also be the hypothetical BLER used in beam failure detection (Beam Failure Detection). In addition, the hypothetical BLER can also be replaced by SINR.

[0123] [[Deactivation Baseline 2-2]]

[0124] If the performance of PDCCH / PDSCH in one or more activated panels other than a certain panel meets the requirements during a certain period of time, the panel may be deactivated. If the performance of PDCCH / PDSCH in multiple panels meets the requirements, the panel to be deactivated may be selected according to at least one of the following selection methods 1 to 4.

[0125] [[Selection Method 1]]

[0126] The panels to be deactivated are randomly selected.

[0127] [[Selection Method 2]]

[0128] The panel with the lowest RSRP / SINR of the best beam within the panel is selected. RSRP / SINR can also be determined based on the measurement results of SSB / CSI-RS.

[0129] [[Selection Method 3]]

[0130] The panel within the panel with the lowest average RSRP / SINR for the best X beams is selected.

[0131] [[Selection Method 4]]

[0132] The panel with the worst performance of PDCCH / PDSCH is selected.

[0133] The UE can send or receive PDCCH / PDSCH through multiple panels at the same time or at different times, and identify whether the performance of PDCCH / PDSCH is lower than a threshold, and also identify whether the performance meets the requirements.

[0134] exist Figure 8 In the example, panels #0, #1, and #2 are activated. The UE fails to receive PDSCH #0 using panel #0, succeeds to receive PDSCH #0 using panel #1, and succeeds to receive PDSCH #1 using panel #1.

[0135] The UE may use the deactivation criterion 2-1 and determine to deactivate the panel #0 when the performance of the PDSCH of the panel #0 is lower than a threshold.

[0136] The UE may also use deactivation reference 2-2. When the performance of the PDSCH of panel #0 does not meet the requirements and the performance of the PDSCH of panel #1 meets the requirements, panel #1 is used to ensure the requirements of PDSCH, and therefore it is determined to deactivate the other panels #0 and #2.

[0137] Activation Benchmark

[0138] The activated reference may also be at least one of the following activation reference 1 and reference 2.

[0139] [Activate Baseline 1]

[0140] The activation of the panel is based on the CSI-RS measurement result. The UE can also decide / judge the deactivation of the panel based on the CSI-RS measurement result.

[0141] For example, when the activation of the panel is determined, the UE may also activate the panel and trigger a report of the activation of the panel (report operation A). Alternatively, when the activation of the panel is determined, the UE may also trigger a report for requesting the activation of the panel (report operation B).

[0142] Activation criterion 1 may comply with either activation criteria 1-1 or 1-2 under the following assumption 1-1.

[0143] [[Assumption 1-1]]

[0144] The UE does not use the deactivated panel to measure CSI-RS. The UE decides whether a new panel needs to be activated based on the measurement result of the currently activated panel. If the measurement result / performance of the currently activated panel is low, the UE activates the new panel.

[0145] [[Activation Baseline 1-1]]

[0146] During a certain period of time, if the measurement result (RSRP / SINR) of the best beam in one, N or all activated panels is smaller than a threshold, the UE may also activate a new panel based on specific rules.

[0147] [[Activation Baseline 1-2]]

[0148] If, within a certain period of time, for one, N, or all activated panels, the average measurement result (RSRP / SINR) of the best X beams in the panel is smaller than a threshold, the UE may also activate a new panel based on specific rules.

[0149] The specific rule may also be at least one of the following.

[0150] The panel with the highest RSRP / SINR for the best beam is selected.

[0151] The panel with the highest average RSRP / SINR of the best X beams is selected.

[0152] ·Selected by UE execution.

[0153] Activation criteria 1 may also comply with any one of activation criteria 1-3 to 1-8 under the following assumption 1-2.

[0154] [[Assumption 1-2]]

[0155] The UE uses the deactivated panel to measure CSI-RS. The UE decides to activate the panel if the measurement result of the panel is good (activation benchmarks 1-3, 1-4), or if the measurement result of the panel is better than the measurement result of the currently activated panel (activation benchmarks 1-5, 1-6), or if the measurement result of the currently activated panel is low (activation benchmarks 1-7, 1-8).

[0156] [[Activate Baseline 1-3]]

[0157] The panel may also be activated if the measurement result (RSRP / SINR) of the best beam within the panel is greater than a threshold during a certain period of time.

[0158] [[Activate Baseline 1-4]]

[0159] If the average measurement result (RSRP / SINR) of the best X beams in a panel is greater than a threshold during a certain period of time, the panel may also be activated.

[0160] [[Activate Baseline 1-5]]

[0161] If the measurement result (RSRP / SINR) of the best beam within a panel is greater than one, N or all activated panels during a certain time period, the panel can also be activated.

[0162] [[Activate Baseline 1-6]]

[0163] If the average measurement results (RSRP / SINR) of the best X beams in a panel are greater than one, N, or all activated panels during a certain period of time, the panel may also be activated.

[0164] [[Activate Baseline 1-7]]

[0165] If the measurement result (RSRP / SINR) of the best beam in one, N or all activated panels is lower than a threshold value during a certain time period, a certain panel can also be activated. If the measurement result of the best beam of a deactivated panel is greater than a threshold value, the panel with the highest measurement result among the deactivated panels can also be activated.

[0166] [[Activate Baseline 1-8]]

[0167] If, for one, N or all of the activated panels during a certain period of time, the average measurement result (RSRP / SINR) of the best X beams in the panel is lower than a threshold, a certain panel may also be activated. If the average measurement result of the best X beams in the deactivated panel is greater than the threshold, the panel with the highest average measurement result among the deactivated panels may also be activated.

[0168] At least one of the time period, threshold, X, and N may be defined in the specification, may be notified to the UE from the base station using high-layer signaling, or may be determined autonomously by the UE (executed by the UE). Other signals (e.g., synchronization signal blocks) may also be used instead of CSI-RS for measurement.

[0169] [Activate Baseline 2]

[0170] The activation of the panel is based on the performance of PDCCH / PDSCH / PUCCH / PUSCH.

[0171] Regarding activation criterion 2, under the following assumption 2-1, activation criterion 2 may also comply with either activation criterion 2-1 or 2-2.

[0172] [[Assumption 2-1]]

[0173] The UE does not use the deactivated panel to receive the PDCCH / PDSCH. The UE determines whether a new panel needs to be activated based on the performance of using the currently activated panel.

[0174] [[Activation Baseline 2-1]]

[0175] During a certain period of time, if the PDCCH / PDSCH performance of one, N or all activated panels is smaller than a threshold (for example, the error rate (BLER) is larger than a threshold), a new panel selected autonomously by the UE may also be activated.

[0176] [[Activation Baseline 2-2]]

[0177] If the performance of the PDCCH / PDSCH in the currently activated panel does not meet the requirements during a certain period of time, a new panel autonomously selected by the UE may be activated.

[0178] Furthermore, even when the performance of a certain activated panel does not meet the requirements, if the performance can be guaranteed by using another activated panel, the new panel may not be activated.

[0179] exist Fig. 9In the example, panels #0 and #1 are activated, and panel #2 is deactivated. The UE fails to receive PDSCH #0 using panel #0, fails again to receive PDSCH #0 using panel #0, and succeeds to receive PDSCH #1 using panel #1.

[0180] The UE may use activation criterion 2-1 and determine to activate panel #2 when N=1 and the performance of the PDSCH of panel #0 is lower than a threshold.

[0181] The UE may use activation criteria 2-2 and determine not to activate panel #2 when the performance of the PDSCH of panel #0 does not meet the requirements and the performance of the PDSCH of panel #1 meets the requirements.

[0182] [[Assumption 2-2]]

[0183] The UE uses the deactivated panel to receive PDCCH / PDSCH. The UE decides to activate the panel when the performance of the panel is good (activation benchmark 2-3), or when the performance of the panel is better than the performance of the currently activated panel (activation benchmark 2-4), or when the performance of the currently activated panel is low (activation benchmarks 2-5, 2-6).

[0184] [[Activation Baseline 2-3]]

[0185] If the performance of the PDCCH / PDSCH of a panel is greater than a threshold during a certain time period, the panel may also be activated.

[0186] [[Activate Baseline 2-4]]

[0187] If the performance of the PDCCH / PDSCH of a panel is greater than one, N or all activated panels during a certain time period, the panel may also be activated.

[0188] [[Activate Baseline 2-5]]

[0189] During a certain time period, for one, N, or all of the activated panels, if the performance of the PDCCH / PDSCH of the panel is lower than a threshold, a certain panel (a certain deactivated panel) may also be activated. When the performance of the deactivated panel is greater than the threshold, the panel with the highest performance among the deactivated panels may also be activated. Alternatively, the panel with the highest measurement result (RSRP / SINR) of the best beam among the deactivated panels may also be activated. Alternatively, the panel with the highest average measurement result (RSRP / SINR) of X beams among the deactivated panels may also be activated.

[0190] [[Activate Baseline 2-6]]

[0191] If the performance of the PDCCH / PDSCH of the activated panel does not meet the requirements during a certain time period, a certain panel (a certain deactivated panel) may also be activated. If the performance of the deactivated panel is greater than the threshold, the panel with the highest performance among the deactivated panels may also be activated. Alternatively, the panel with the highest measurement result (RSRP / SINR) of the best beam among the deactivated panels may also be activated. Alternatively, the panel with the highest average measurement result (RSRP / SINR) of X beams among the deactivated panels may also be activated.

[0192] At least one of the time period, threshold, X, and N may be defined in the specification, may be notified to the UE from the base station using high-layer signaling, or may be determined autonomously by the UE (executed by the UE). In addition, activation criteria 2-3 to 2-6 may also be applied under specific conditions. The specific condition may also be the case where DL reception (DL Rx) in the panel is performed by the UE, and deactivation of the panel is applied only to the UL.

[0193] (Third Method)

[0194] In the third mode, a case is described in which the UE reports (or requests) activation / deactivation of a panel to the base station, and activates / deactivates the panel after confirmation / approval from the base station.

[0195] When the UE determines the activation / deactivation of the panel based on specific conditions / specific benchmarks, it reports to the base station information requesting the activation / deactivation of the panel. The base station may also send approval information for the report from the UE to the UE. The approval information may also be information indicating the trigger of the activation / deactivation of the panel.

[0196] The base station may also notify the UE of the approval information using at least one of the MAC CE and the DCI. The approval information may be explicitly notified using a specific bit field or implicitly notified using a transmission condition (e.g., a transmission parameter such as a CCE index corresponding to the DCI or a CORESET position).

[0197] In case the UE requests activation / deactivation for a specific panel (refer to Fig. 10A ), the base station may also send approval information for activation / deactivation of a specific panel reported from the UE (refer to Fig. 10B , Fig. 10C ). In the case where the UE has an activation / deactivation request for multiple panels, the base station can send approval information for each panel or send common approval information to multiple panels.

[0198] The base station may also directly notify the UE of the panel indicating activation / deactivation (or, triggering / permitting) (see Fig. 10B ).exist Fig. 10B In FIG. 1 , it is shown that the UE requests activation / deactivation of a specific panel ID (here, panel ID#1, #2) through MAC CE (reference Fig. 10A ), the base station indicates the activation / deactivation status of each panel ID#1 and ID#2 through MAC CE.

[0199] Alternatively, when the UE has a request (or report) for activation / deactivation of the panel, the base station may also notify the UE of information indicating whether the request is recognized (acknowledged or not). When the base station recognizes the request from the UE, the base station may also include information (e.g., A / N) indicating that the request from the UE is recognized in the MAC CE and send it to the UE (refer to Fig. 10C ). Here, it shows that the UE requests activation / deactivation of a specific panel ID (here, panel ID#1, #2) through MAC CE, and the base station indicates A / N for each panel ID#1, #2 through MAC CE respectively.

[0200] In the case of receiving approval information from the base station (for example, in the case of receiving ACK), the UE may also control to activate / deactivate the reported panel. In other cases (for example, in the case of receiving NACK), the UE may also control not to activate / deactivate the reported panel.

[0201] When the UE receives approval information from the base station, the UE may also control the activation / deactivation of the panel after a specific timing. When the UE does not receive approval information from the base station, whether the UE retransmits the report or reselects the panel to be activated / deactivated may be determined by the UE autonomously or based on specific conditions. In addition, the UE operation when the UE does not receive approval information from the base station may be defined in the specification or set to the UE through high-layer signaling.

[0202] In this way, the base station notifies the approval information for each panel, thereby making it possible to flexibly control the A / D for each panel.

[0203] On the other hand, when the UE is requested to perform A / D of multiple panels, the base station may transmit approval information (A / D notification or A / N notification) to the multiple panels in common. In this case, it is possible to suppress an increase in the overhead of the approval information.

[0204] (Wireless Communication System)

[0205] 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 one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0206] Fig.11 1 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.

[0207] 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.

[0208] 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.

[0209] 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)).

[0210] 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 the 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 the base station 10.

[0211] 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).

[0212] 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 (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 this. For example, FR1 may also correspond to a frequency band higher than FR2.

[0213] Furthermore, in each CC, the user terminal 20 may communicate using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0214] Multiple base stations 10 may also be connected by wire (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wirelessly (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 may also be referred to as an IAB node.

[0215] 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.

[0216] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0217] 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.

[0218] 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 applied to the UL and DL radio access schemes.

[0219] 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.

[0220] 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.

[0221] The PDSCH is used to transmit user data, high-layer control information, system information block (SIB), etc. The PUSCH is also used to transmit user data, high-layer control information, etc. In addition, the PBCH is also used to transmit the master information block (MIB).

[0222] 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.

[0223] In addition, the DCI that schedules the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI that schedules 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.

[0224] 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.

[0225] A search space may also correspond to PDCCH candidates that are consistent with 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.

[0226] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., may also be called hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (Scheduling Request (SR)) may also be transmitted through PUCCH. Random access preamble code for establishing connection with a cell may also be transmitted through PRACH.

[0227] 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.

[0228] 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.

[0229] 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.

[0230] In addition, as an uplink reference signal (UL-RS), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted in the wireless communication system 1. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0231] (Base Station)

[0232] Fig.12 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.

[0233] In addition, in this example, the functional blocks of the characteristic parts of 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 be omitted.

[0234] 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 the common knowledge in the technical field to which the present disclosure relates.

[0235] 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.

[0236] 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 public knowledge in the technical field involved in the present disclosure.

[0237] 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.

[0238] The transmitting / receiving antenna 130 can be constituted by an antenna described based on the common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0239] 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.

[0240] 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.

[0241] 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, control information, etc. obtained from the control unit 110, to generate a bit string to be sent.

[0242] 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, discrete Fourier transform (DFT) processing (as needed), inverse fast Fourier transform (IFFT) processing), precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0243] 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 .

[0244] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may perform amplification, filter processing, demodulation into a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0245] For the acquired baseband signal, the transmitting 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, etc. to obtain user data, etc.

[0246] 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.

[0247] The transmission path interface 140 can also send and receive signals (return signaling) between the 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.

[0248] In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmitting and receiving unit 120 , the transmitting and receiving antenna 130 , and the transmission path interface 140 .

[0249] The transmitting and receiving unit 120 may also transmit information requesting a report related to activation or deactivation of a panel. The transmitting and receiving unit 120 may also receive a report related to activation or deactivation of a panel.

[0250] The transmitting and receiving unit 120 may also receive a report requesting activation or deactivation of a panel. The transmitting and receiving unit 120 may also send information indicating activation or deactivation of a panel based on the report.

[0251] The control unit 110 may also control transmission / reception in the transmission / reception unit 120 .

[0252] (User Terminal)

[0253] Fig.13The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. In addition, the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may be provided in one or more pieces.

[0254] 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 user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0255] 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 the common knowledge in the technical field to which the present disclosure relates.

[0256] 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.

[0257] 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 public knowledge in the technical field involved in the present disclosure.

[0258] 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.

[0259] The transmitting / receiving antenna 230 can be constituted by an antenna described based on the common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0260] 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.

[0261] 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.

[0262] The sending and receiving unit 220 (sending processing unit 2211), for example, 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.

[0263] 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.

[0264] 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.

[0265] 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 .

[0266] 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 .

[0267] 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 acquired baseband signal to obtain user data, etc.

[0268] 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.

[0269] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be constituted by at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0270] The transmitting and receiving unit 220 may also include a report related to activation or deactivation of the panel in at least one of channel state information and MAC control information (MAC CE) and transmit the report.

[0271] The transmitting and receiving unit 220 may also transmit a report for activating or deactivating a panel, or a report for requesting activation or deactivation of a panel.

[0272] The control unit 210 may also decide to activate or deactivate the panel. The control unit 210 may also control the sending timing of the report related to the activation or deactivation of the panel based on the notification from the base station. The control unit 210 may also control the sending timing of the report related to the activation or deactivation of the panel based on a specific condition. The control unit 210 may also control so that the reports related to the activation or deactivation of multiple panels are performed in one report.

[0273] The control unit 210 may also determine the activation or deactivation of the panel based on the measurement result of the reference signal (e.g., CSI-RS / SSB) or the performance of the downlink channel. The control unit 210 may also determine the newly activated panel based on the measurement result of the reference signal of the panel in the activated state or the performance of the downlink channel. The control unit 210 may also determine the newly activated panel based on the measurement result of the reference signal of the panel in the deactivated state or the performance of the downlink channel. The control unit 210 may also control to activate or deactivate the panel based on the information notified from the base station after the report requesting the activation or deactivation of the panel.

[0274] (Hardware Structure)

[0275] 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.

[0276] 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.

[0277] 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.14 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0278] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. are interchangeable. The hardware structure of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

[0279] 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.

[0280] 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.

[0281] 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.

[0282] 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 enables 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.

[0283] 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), and 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.

[0284] 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)), etc.), a digital versatile disk, a 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 appropriate storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0285] 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 can 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. can also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) can also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0286] 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).

[0287] 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 different buses may be used between the devices.

[0288] 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.

[0289] (Variation Example)

[0290] 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.

[0291] 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).

[0292] Here, the parameter set may also refer to a communication parameter applied in at least one of the transmission and reception of a certain signal or channel. For example, the parameter set may also represent at least one of the subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), the number of symbols per TTI, wireless frame structure, specific filtering processing performed by the transmitter and receiver in the frequency domain, specific windowing processing performed by the transmitter and receiver in the time domain, etc.

[0293] 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.

[0294] 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.

[0295] 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.

[0296] For example, a subframe may also be referred to as a TTI, a plurality of consecutive subframes may also be referred to as a TTI, and a time slot or a mini time slot may also be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in the existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may also be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0297] 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.

[0298] 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 also be shorter than the TTI.

[0299] In addition, when one time slot or one mini time slot is referred to as TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) may also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling may also be controlled.

[0300] 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.

[0301] 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.

[0302] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may also 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.

[0303] 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.

[0304] 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.

[0305] In addition, a resource block may also be composed of one or more resource elements (RE). For example, one RE may also be a radio resource region of one subcarrier and one symbol.

[0306] A Bandwidth Part (BWP) (also referred to as a partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, a common RB may also be identified by an index of the RB relative to a common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0307] 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.

[0308] At least one of the configured BWPs may be activated, and the UE may not assume that it transmits or receives a specific signal / channel other than the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced by "BWP".

[0309] 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.

[0310] In addition, the information, parameters, etc. described in the present disclosure may be expressed by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, a wireless resource may also be indicated by a specific index.

[0311] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. In addition, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. The 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.

[0312] Information, signals, etc. described in the present disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0313] 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.

[0314] 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.

[0315] 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.

[0316] 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)).

[0317] 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).

[0318] 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).

[0319] 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.

[0320] 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.

[0321] 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.

[0322] 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.

[0323] 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.

[0324] 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.

[0325] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” are used interchangeably.

[0326] In some cases, the mobile station is also referred to as a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a hand set, a user agent, a mobile client, a client, or some other appropriate terminology.

[0327] 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.

[0328] 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, expressions such as "uplink" and "downlink" may also be replaced by expressions corresponding to communication between terminals (for example, "side"). For example, an uplink channel, a downlink channel, etc. may also be replaced by a side channel.

[0329] 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.

[0330] In the present disclosure, the actions are assumed to be performed by the base station, and sometimes by its upper node according to the circumstances. 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, Mobility Management Entity (MME)), Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0331] 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.

[0332] 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), 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)) (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems expanded based on them. In addition, multiple systems can also be applied in combination (for example, LTE or LTE-A, combination with 5G, etc.).

[0333] The term “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the term “based on” means both “based only on” and “based at least on”.

[0334] 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 a first and a second element 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.

[0335] The term "determining" as used in this disclosure may include a variety of actions. For example, "determining" may also be considered as "judging", calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database or other data structure), ascertaining, etc.

[0336] In addition, "judgment (decision)" can also be regarded as a situation of "judgment (decision)" on receiving (for example, receiving information), transmitting (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc.

[0337] In addition, "judgment (decision)" can also be regarded as a situation of "judgment (decision)" on resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment (decision)" can also be regarded as a situation of "judgment (decision)" on some actions.

[0338] In addition, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)” and so on.

[0339] The “maximum transmit power” recorded in the present disclosure may indicate the maximum value of the transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated UE maximum transmit power).

[0340] 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".

[0341] 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.

[0342] 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 way as "different".

[0343] 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.

[0344] 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.

[0345] 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, characterized in that: have: A receiving unit, receiving setting information of a channel state information CSI report related to an antenna port; A sending unit, sending a CSI report related to the antenna port based on the setting information; as well as The control unit performs control so that multiple information corresponding to the antenna port is reported in one CSI report.

2. The terminal according to claim 1, characterized in that The antenna port is a sounding reference signal SRS port.

3. The terminal according to claim 1 or claim 2, characterized in that: The fields within the CSI report are variable bit width.

4. A wireless communication method for a terminal, characterized in that: have: The step of receiving setting information of a channel state information CSI report related to an antenna port; A step of sending a CSI report related to the antenna port based on the setting information; as well as A step of controlling so that a plurality of information corresponding to the antenna port is reported in one CSI report.

5. A base station, characterized in that: have: A sending unit, sending setting information of a channel state information CSI report related to an antenna port; as well as A receiving unit, based on the setting information, sends a CSI report related to the antenna port, The CSI report includes a plurality of information corresponding to the antenna port.

6. A system comprising a terminal and a base station, characterized in that: The terminal has: A receiving unit, receiving setting information of a channel state information CSI report related to an antenna port; A sending unit, sending a CSI report related to the antenna port based on the setting information; as well as A control unit is configured to control so that a plurality of information corresponding to the antenna port is reported in one CSI report, The base station has: A sending unit, sending the setting information; as well as The receiving unit sends the CSI report.

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