Terminal, wireless communication method, base station and system

Abstract

A terminal involved in one embodiment of the present invention is characterized in that it comprises: a receiving unit that receives information indicating activation or deactivation of a panel; and a control unit that controls so that a communication operation using the panel or a communication operation not using the panel is performed after a certain offset period based on at least one of the reception timing of the information and the sending timing of a delivery confirmation signal for the information.

Description

Technical Field

[0001] The present disclosure relates to a terminal, a wireless communication method, a base station, and a system 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 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] In future wireless communication systems (e.g., NR), research is underway to determine the DL receive beam (spatial domain receive filter) and UL transmit beam (spatial domain transmit filter) based on information notified from the base station. In addition, research is underway to switch multiple UE panels (panels, antenna panels) by the UE to perform DL reception and UL transmission.

[0010] However, it is not clear how the UE controls the switching of panels (eg, activation / deactivation). If the 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] Means for solving problems

[0013] A terminal involved in one embodiment of the present invention is characterized in that it comprises: a receiving unit that receives information indicating activation or deactivation of a panel; and a control unit that controls so that a communication operation using the panel or a communication operation not using the panel is performed after a certain offset period based on at least one of the reception timing of the information and the sending timing of a delivery confirmation signal for the information.

[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 It is a diagram showing the use of a panel of a UE in 3GPP Rel.15.

[0017] Figure 2 This is a diagram showing an example of activation / deactivation control of the panel according to the first embodiment.

[0018] Figure 3 This is a diagram showing another example of control of activation / deactivation of the panel according to the first embodiment.

[0019] Figure 4A as well as Figure 4B This is a diagram showing another example of control of activation / deactivation of the panel according to the first embodiment.

[0020] Figure 5 This is a diagram showing an example of activation / deactivation control of the panel according to the second embodiment.

[0021] Figure 6 This is a diagram showing another example of control of activation / deactivation of the panel according to the second embodiment.

[0022] Figure 7 This is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.

[0023] Figure 8 This is a diagram showing an example of the configuration of a base station according to an embodiment.

[0024] Fig. 9 This is a diagram showing an example of a configuration of a user terminal according to an embodiment.

[0025] Fig.10 This is a diagram showing an example of the hardware configuration of a base station and a user terminal according to an embodiment. DETAILED DESCRIPTION

[0026] Figure 1 This is a diagram showing the use of panels for UE in 3GPP Rel.15. In Rel.15, the selection / use of the uplink (UL) panel of the user terminal (User Equipment (UE)) is transparent to the network (NW, such as base station, gNB). The UE uses only one panel for UL transmission at a time and does not use multiple panels simultaneously. Figure 1 In the example shown, the UE uses Panel #1 for UL transmission. Alternatively, the UE can also dynamically switch the panel to be used by an implicit method (notification).

[0027] However, in Rel.15, the UE keeps the power of multiple panels on to support beam management. The UE keeps the power of the panels on, so that when the communication speed of the panel in use drops due to obstacles, etc., it can quickly switch to other panels to improve performance. However, since the power of multiple panels is always on, there is a problem of high power consumption and inefficiency.

[0028] Therefore, research is underway to determine whether to turn on or off the power of each of the multiple panels and to switch the power of the panel on or off for control. For example, consider that the UE controls turning on (or activating) and off (or deactivating) each panel based on information explicitly notified from the base station or implicitly notified.

[0029] For example, the UE may also receive setting information related to the panel from the base station. The setting information is information indicating whether the power of the panel is turned on (activated) / off (deactivated), and may also be set for each panel. Based on the setting information, the UE determines the activation / deactivation of the panel and controls the switching of the panel. Then, the UE uses the activated panel to send and receive signals.

[0030] When the UE has multiple panels, only some of the panels may be switched. In addition, the UE may switch activation / deactivation of the panels dynamically or semi-statically.

[0031] The UE may also receive the setting information of each panel through RRC signaling (eg, Radio Resource Control (RRC) signaling). The UE may also be explicitly notified of the activation / deactivation of each panel through RRC signaling.

[0032] Alternatively, the UE may receive the setting information of each panel through a MAC control element (Medium Access Control Control Element (MAC CE)). In addition, the UE may receive the setting information of each panel using both RRC signaling and MAC CE.

[0033] In the MAC CE, the activation / deactivation of the panel can also be set by an m-bit bitmap. M can be predetermined in the specification, or can be set according to the number of panels set by RRC.

[0034] Alternatively, the UE may also receive setting information of each panel through downlink control information (eg, DCI).

[0035] Alternatively, the activation / deactivation of the panel may also be implicitly indicated by other parameters set in the base station. For example, the on / off state of panel j may be indicated by whether the panel ID (j) is set for the RS (whether the panel is associated with the RS), or whether the RS corresponding to panel j is set (aperiodic / semi-persistence / periodic), or whether the spatial relationship information corresponding to panel j is set.

[0036] In this way, by controlling activation / deactivation of the panel in the UE based on an instruction from the base station, the power consumption of the UE can be reduced.

[0037] On the other hand, the UE that receives the information indicating activation or deactivation of the panel (setting information of the panel) performs activation / deactivation operation (or opening / closing operation) of the panel. However, how the UE controls the activation / deactivation operation (eg, timing, etc.) becomes a problem.

[0038] For example, it is also considered that a specific period is required from the time the UE receives the setting information of the panel to the activation or deactivation of the panel. In this case, on the base station side, if it is assumed that the UE switches the panel at the timing of receiving the setting information to perform transmission and reception to control communication, there is a concern that the communication quality will deteriorate.

[0039] The inventors of the present invention focused on the fact that when the panel is activated / deactivated based on the setting information of the panel, there is inconsistency in the timing of activation / deactivation of the panel between the base station and the UE, and conducted research on the timing of activation / deactivation of the panel to conceive of the present embodiment.

[0040] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication 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".

[0041] 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".

[0042] "Turning on the power of the panel" in the present disclosure means the activation state of the panel, and may also mean at least one of 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 from the NW through downlink control information (Downlink Control Information (DCI))) can be received, and a state in which a UL data channel (for example, Physical Uplink Shared Channel (PUSCH)) scheduled from the NW through DCI) can be sent.

[0043] In addition, "turning off the power of the panel" in the present disclosure means the inactive state of the panel, and may also mean at least one of a state in which blind detection of PDCCH is not required in the set search space, a state in which reception of PDSCH scheduled from NW through DCI, etc. is not required, and a state in which sending of PUSCH scheduled from NW through DCI, etc. is not required.

[0044] 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, inactivation, or stop.

[0045] (First method)

[0046] In the first manner, a case where the UE controls activation / deactivation of the control panel based on higher layer signaling (eg, MAC CE / RRC) is described.

[0047] The network (eg, base station) may also explicitly indicate to the UE via higher layer signaling whether to activate / deactivate the panel. The UE may also determine whether to activate / deactivate the panel based on the indication of the higher layer signaling.

[0048] Alternatively, the base station may also implicitly indicate the activation / deactivation of the panel to the UE by means of the association between the panel and the channel / reference signal set by higher layer signaling, etc. When a certain channel / reference signal is set, the UE may also determine the activation / deactivation of the panel associated with the set channel / reference signal.

[0049] When activation of the panel is instructed, the UE uses the activated panel (for example, the power of the panel is switched on) to perform transmission processing / reception processing, etc. When deactivation of the panel is instructed, the UE does not use the deactivated panel (for example, the power of the panel is switched off) to perform transmission processing / reception processing, etc.

[0050] The UE that is instructed to activate / deactivate a panel through high-level signaling (e.g., PDSCH) performs operations corresponding to the activated / deactivated panel after a specific period. The specific period may also be a period starting from the transmission timing of the HARQ-ACK (or PUCCH) for the high-level signaling (e.g., PDSCH).

[0051] That is, the specific period may be set with the transmission timing of HARQ-ACK (or PUCCH) as the starting position. The specific period, offset period, switching period, upgrade period or change period may be replaced with each other.

[0052] HARQ-ACK may also be ACK. When HARQ-ACK is NACK, the UE may also perform control so as not to perform operations corresponding to the activated / deactivated panel. In the following description, as HARQ-ACK, the case of sending ACK is cited as an example for description.

[0053] In the case where activation of a panel is instructed, the UE may also be controlled so that, after an offset period, an operation (or communication operation) using the panel instructed to be activated is performed. In the case where deactivation of a panel is instructed, the UE may also be controlled so that, after an offset period, an operation using the panel instructed to be deactivated is not performed (or stopped).

[0054] The operation utilizing the panel (or communication operation) refers to the sending processing / receiving processing utilizing the panel, etc. 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 from NW through DCI, etc., the sending operation of PUSCH scheduled from NW through DCI, etc., and the sending operation of PUCCH.

[0055] The offset period may be determined based on at least one of the following options 1-1 to 1-3.

[0056] <Option 1-1>

[0057] The offset period may be defined by a specific value. The specific value may be changed according to the subcarrier spacing set in the channel (for example, PUCCH) used for HARQ-ACK transmission.

[0058] Figure 2 This is a diagram showing an example of UE operation when the UE receives a PDSCH containing an activation / deactivation indication of a panel (e.g., an activation / deactivation command). Here, the operation corresponding to the activated / deactivated panel is performed after a specific value corresponding to the offset period has passed, with the transmission timing (e.g., transmission time slot) of the HARQ-ACK for the PDSCH as the starting position. In the following description, the time slot may also be replaced by a subframe, a subslot, or a symbol.

[0059] exist Figure 2 The specific value is shown as 3N slot subframe,μ N slot subframe,μ N represents the number of time slots per subframe and may be a value set for each subcarrier spacing μ. For example, when the subcarrier spacing is 15 kHz (μ=0), N may be slot subframe,μ is 1, when the subcarrier spacing is 30kHz (μ=1) N slot subframe,μ is 2, when the subcarrier spacing is 60kHz (μ=2) slot subframe,μ is 4, when the subcarrier spacing is 120kHz (μ=3) slot subframe,μ When the subcarrier spacing is 240kHz (μ=4), N slot subframe,μ is 16.

[0060] Specific values ​​are not limited to 3N slotsubframe,μ , can also be set to other specific values.

[0061] exist Figure 2 , the case where the UE sends a HARQ-ACK (or PUCCH) for a PDSCH containing an activation / deactivation indication of the panel in time slot #n is shown. In this case, the UE can also send a HARQ-ACK (or PUCCH) from time slot n+3N slot subframe,μ Starting from the first time slot after that, operations corresponding to the activated / deactivated panel are performed.

[0062] For example, when the activation of the panel is instructed, the UE may also control the UE to start from the time slot n+3N. slot subframe,μ In the case where the panel is instructed to be deactivated, the UE may also control the panel to be activated from the first time slot after the activation. slot subframe,μ From the first time slot thereafter, communication operations are not performed using the panel instructed to be deactivated.

[0063] In this way, by starting the operation corresponding to activation / deactivation of the panel after a specific offset period, the switching timing of the panel can be appropriately recognized on the base station side and the UE side.

[0064] <Option 1-2>

[0065] The offset period may be defined based on a specific value and another specific value. The specific value may be changed according to the subcarrier spacing set in a channel (eg, PUCCH) used for HARQ-ACK transmission.

[0066] Other specific values ​​(e.g., X) may also be values ​​defined in specific units based on a parameter set of the PUCCH (e.g., subcarrier spacing). The specific unit may also be at least one of a subframe, a time slot, a subslot, and a symbol. Alternatively, other specific values ​​(X) may also be absolute values.

[0067] In addition, other specific values ​​(X) may also be predefined in the specification. Alternatively, other specific values ​​(X) may also be determined based on UE capabilities (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.

[0068] Alternatively, other specific values ​​(X) may also be notified from the base station to the UE using at least one of higher layer signaling and DCI. For example, the base station may also notify the UE of X based on the UE capability information reported from the UE.

[0069] Figure 3 This is a diagram showing an example of UE operation when the UE receives a PDSCH containing an activation / deactivation indication of a panel (e.g., an activation / deactivation command). Here, with the transmission timing (e.g., transmission time slot) of the HARQ-ACK for the PDSCH as the starting position, after a specific value corresponding to the offset period + other specific values ​​(X) have passed, the operation corresponding to the activated / deactivated panel is performed.

[0070] exist Figure 3 The specific value is shown as 3N slot subframe,μ , other specific values ​​are X. Specific values ​​are not limited to 3N slot subframe,μ , can also be set to other specific values.

[0071] exist Figure 3 , the case where the UE sends a HARQ-ACK (or PUCCH) for a PDSCH containing an activation / deactivation indication of the panel in time slot #n is shown. In this case, the UE can also send a HARQ-ACK (or PUCCH) from time slot n+3N slot subframe,μ From the first time slot after +X, operations corresponding to the activated / deactivated panel are performed.

[0072] For example, when the activation of the panel is instructed, the UE may also control the UE to start from the time slot n+3N. slot subframe,μ +X, the communication operation (or panel switching) is performed using the panel instructed to be activated. In the case where the panel is instructed to be deactivated, the UE may also control the panel to be activated from the time slot n+3N. slot subframe,μ From the first time slot after +X, the communication operation is not performed using the panel instructed to be deactivated.

[0073] In this way, by starting the operation corresponding to panel activation / deactivation after a specific offset period, the base station side and the UE side can appropriately identify the panel switching timing. In addition, as the offset period, other specific values ​​(X) are considered, thereby enabling the offset period to be flexibly set.

[0074] <Options 1-3>

[0075] The duration (or length) of the offset period may also be changed based on a specific condition. For example, when the offset period is defined by a specific value and another specific value (X), the offset period (e.g., at least one of the specific value and the other specific value (X)) may also be changed based on a specific condition. The change of the offset period may also be controlled by the value of the other specific value (X) or the presence or absence of the setting of X.

[0076] The specific condition may be content indicated by higher layer signaling (or PDSCH). For example, the offset period when activation of the indicated panel and the offset period when deactivation of the indicated panel may be set separately (for example, differently).

[0077] The offset period in the case of deactivation (switching from activation to deactivation) of the indicated panel may also be set to be shorter than the offset period in the case of activation (switching from deactivation to activation) of the indicated panel. That is, the offset period in the case of newly activating the panel may also be set to be longer than the offset period in the case of deactivating the panel.

[0078] For example, when the period required to turn on the power of the panel to enable the panel to be used is different from the period required to turn off the power of the panel, the communication can be flexibly controlled by flexibly setting the offset period.

[0079] Figure 4A as well as Figure 4B This is a diagram showing an example of a case where the offset period is changed and applied based on a specific condition. Here, a case where the offset period is changed (or a different offset period is set) based on whether or not X is applied (or added) is shown.

[0080] For example, when the panel is instructed to be deactivated, the UE may also apply the first offset period (see Figure 4A ). Here, the first offset period is shown as 3N slot subframe,μ (For example, X=0). In this case, the UE can also control so that the time slot n+3N slot subframe,μ From the first time slot thereafter, communication operations are not performed using the panel instructed to be deactivated.

[0081] For example, when the activation of the panel is instructed, the UE may also apply the second offset period (see Figure 4B ). Here, the second offset period is shown as 3N slot subframe,μ In this case, the UE can also control the time slot n+3N. slot subframe,μFrom the first time slot after +X, communication operation is performed using the panel instructed to be activated.

[0082] When activation is instructed, the UE applies the first offset period (n+3N) longer than when deactivation is instructed. slot subframe,μ ) long second offset period (n+3N slot subframe,μ +X).

[0083] Here, the case where the offset period is changed based on whether or not another specific value (X) is applied is shown, but the present invention is not limited thereto. X may be included in both the first offset period and the second offset period, and the value of X may be set to be different. The value of X may be defined in the specification, or may be notified from the base station to the UE using at least one of higher layer signaling and DCI.

[0084] The specific condition is not limited to the content indicated by the higher layer signaling (or PDSCH). For example, the specific condition may be the spatial relationship corresponding to the activated panel or the presence or absence of activation of the transmission structure indication state.

[0085] The spatial relationship may also be spatial relationship information. The spatial relationship may also be the spatial relationship of PUCCH. The transmission configuration indication (TCI: Transmission Configuration Indication or Transmission Configuration Indicator) state (TCI state (TCI-state)) may also be the TCI state of PDSCH or PUCCH.

[0086] For example, when the indicated panel is activated and the spatial relationship / TCI state corresponding to the panel is activated, the UE may also apply the first offset period. On the other hand, when the indicated panel is activated and the spatial relationship / TCI state corresponding to the panel is not activated, a second offset period longer than the first offset period may also be applied.

[0087] In the case where there are multiple spatial relationship / TCI states corresponding to the panel, the UE may also apply the first offset period when all spatial relationship / TCI states are activated, and apply the second offset when at least one spatial relationship / TCI state is deactivated. Alternatively, the UE may also apply the first offset period when at least one spatial relationship / TCI state is activated.

[0088] (Second method)

[0089] In the second manner, a case where the UE controls activation / deactivation of the control panel based on downlink control information (eg, DCI) is described.

[0090] The network (eg, base station) may also explicitly indicate to the UE via DCI whether to activate / deactivate the panel. The UE may also determine whether to activate / deactivate the panel based on the indication of the DCI.

[0091] Alternatively, activation / deactivation of a panel may also be indicated to the UE by determining whether a specific channel (eg, PDCCH / PDSCH / PUCCH / PUSCH) is scheduled in the panel. When a specific channel is scheduled or allocated to a panel, the UE may also determine that the panel is activated.

[0092] When activation of the panel is instructed, the UE uses the activated panel (for example, the power of the panel is switched on) to perform transmission processing / reception processing, etc. When deactivation of the panel is instructed, the UE does not use the deactivated panel (for example, the power of the panel is switched off) to perform transmission processing / reception processing, etc.

[0093] The UE that has been instructed to activate / deactivate a panel through DCI performs operations corresponding to the activated / deactivated panel after a specific period of time.

[0094] The specific period may also be a period starting from the reception timing of the DCI (option 2-1). That is, the specific period may also be set with the reception timing of the DCI as the starting position. The starting position may also be determined based on at least one unit of a subframe, a time slot, a subslot, and a symbol. The specific period, the offset period, the switching period, the upgrade period, or the change period may also be replaced with each other.

[0095] Alternatively, the specific period may be a period starting from the transmission timing of the HARQ-ACK (or PUCCH) for the PDSCH scheduled by the DCI (option 2-2). That is, the specific period may also be set with the transmission timing of the HARQ-ACK (or PUCCH) as the starting position. The starting position may also be determined based on at least one unit of a subframe, a time slot, a subslot, and a symbol.

[0096] <Option 2-1>

[0097] In the case where activation of a panel is indicated by DCI, the UE controls so that after a period of offset from the reception timing of the DCI (or PDCCH), communication operations are performed using the panel indicated for the activation. In addition, in the case where deactivation of a panel is indicated by DCI, the UE controls so that after a period of offset from the reception timing of the DCI (or PDCCH), communication operations using the panel indicated for the deactivation are not performed (or stopped).

[0098] The offset period may also be defined by a specific value (e.g., X). The specific value (X) may also be a value defined in a specific unit based on a parameter set (e.g., subcarrier spacing) of DCI (or PDCCH). The specific unit may also be at least one of a subframe, a time slot, a sub-time slot, and a codeword. Alternatively, the specific value (X) may also be an absolute value.

[0099] In addition, the specific value (X) may also be predefined in the specification. Alternatively, the specific value (X) may also be determined based on UE capabilities (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.

[0100] Alternatively, the specific value (X) may also be notified from the base station to the UE using at least one of higher layer signaling and DCI. For example, the base station may also notify the UE of X based on the UE capability information reported from the UE.

[0101] Figure 5 This is a diagram showing an example of UE operation when the UE receives a PDCCH (or DCI) containing an activation / deactivation indication of a panel (e.g., an activation / deactivation command). Here, with the reception timing of the PDCCH (e.g., a reception slot) as the starting position, after a specific value (X) corresponding to the offset period has passed, the operation corresponding to the activated / deactivated panel is performed. The slot may also be replaced by a subframe, a subslot, or a symbol.

[0102] exist Figure 5 , it is shown that the UE receives a PDCCH including an activation / deactivation indication of a panel in time slot #n. In this case, the UE may also perform operations corresponding to the activated / deactivated panel from the first time slot after time slot n+X.

[0103] For example, when the activation of the panel is instructed, the UE may also control the communication operation (or panel switching) to be performed using the panel instructed to be activated from the first time slot after time slot n+X. When the deactivation of the panel is instructed, the UE may also control the communication operation not to be performed using the panel instructed to be deactivated from the first time slot after time slot n+X.

[0104] The UE may also assume or determine that it is not required to activate / deactivate the panel before time slot n+X. For example, when a PUCCH transmission opportunity is set after time slot n+X, the UE may also control not to perform PUCCH transmission using the panel that is instructed to be deactivated.

[0105] In addition, when a PUCCH transmission opportunity is set after time slot n and before time slot n+X, the UE may perform control so as not to perform PUCCH transmission using a panel for which deactivation is instructed.

[0106] In this way, by starting the operation corresponding to activation / deactivation of the panel after a specific offset period, the switching timing of the panel can be appropriately recognized on the base station side and the UE side.

[0107] <Option 2-2>

[0108] In the case where activation of the panel is indicated by DCI, the UE controls so that after a period of offset from the transmission timing of HARQ-ACK for the PDSCH scheduled by DCI (or PDCCH), communication operations are performed using the panel indicated by the activation. In addition, in the case where deactivation of the panel is indicated by DCI, the UE controls so that after a period of offset from the transmission timing of HARQ-ACK for the PDSCH scheduled by DCI (or PDCCH), communication operations using the panel indicated by the deactivation are not performed (or stopped).

[0109] The offset period can also be set in the same manner as in option 2-1.

[0110] Figure 6 This is a diagram showing an example of UE operation when the UE receives a PDCCH (or DCI) containing an activation / deactivation indication of a panel (e.g., an activation / deactivation command). Here, the operation corresponding to the activated / deactivated panel is performed after a specific value (X) corresponding to the offset period has passed, with the transmission timing (e.g., transmission slot) of the HARQ-ACK of the PDSCH scheduled by the PDCCH as the starting position. The slot may also be replaced by a subframe, a subslot, or a symbol.

[0111] exist Figure 6 , a case where the UE sends HARQ-ACK of a PDSCH scheduled by a PDCCH (or DCI) containing an activation / deactivation indication of a panel in time slot #n is shown. In this case, the UE may also perform operations corresponding to the activated / deactivated panel from the first time slot after time slot n+X.

[0112] For example, when the activation of the panel is instructed, the UE may also control the communication operation (or panel switching) to be performed using the panel instructed to be activated from the first time slot after time slot n+X. When the deactivation of the panel is instructed, the UE may also control the communication operation not to be performed using the panel instructed to be deactivated from the first time slot after time slot n+X.

[0113] The UE may also assume or determine that it is not required to activate / deactivate the panel before time slot n+X. For example, when a PUCCH transmission opportunity is set after time slot n+X, the UE may also control not to perform PUCCH transmission using the panel that is instructed to be deactivated.

[0114] In addition, when a PUCCH transmission opportunity is set after time slot n and before time slot n+X, the UE may perform control so as not to perform PUCCH transmission using a panel for which deactivation is instructed.

[0115] In this way, by setting the starting position of the offset to the transmission timing of HARQ-ACK (e.g., ACK) for the PDSCH scheduled by the PDCCH, the panel switching timing can be properly identified on the base station side and the UE side even if the UE misses the detection of the DCI.

[0116] <Changes>

[0117] In option 2-1 or 2-2, the offset period (eg, specific value (X)) may be configured such that the change period (or length) is changed based on specific conditions. Option 1-3 in the first aspect may also be applied to the change conditions of the offset period.

[0118] In addition, the starting position of the specific period (for example, the offset period) is not limited to option 2-1 or 2-2. For example, the specific period may be a period starting from the transmission timing of the PUSCH scheduled by the DCI.

[0119] (Wireless Communication System)

[0120] Hereinafter, a configuration of a wireless communication system according to an embodiment of the present disclosure will be described. In the wireless communication system, communication is performed using any one of the wireless communication methods according to the above-mentioned embodiments of the present disclosure or a combination thereof.

[0121] Figure 7 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.

[0122] 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.

[0123] 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.

[0124] 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)).

[0125] The wireless communication system 1 may also include a base station 11 that forms a macro cell C1 with a relatively wide coverage, and a base station 12 (12a-12c) that is configured in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The configuration and number of each cell and user terminal 20 are not limited to the method shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as base stations 10.

[0126] 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).

[0127] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also be equivalent to a frequency band higher than FR2.

[0128] Furthermore, the user terminal 20 may perform communication in each CC using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0129] Multiple base stations 10 may also be connected via wired (e.g., optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (e.g., NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station may also be referred to as an Integrated Access Backhaul (IAB) donor, and the base station 12 equivalent to a relay station (relay) may also be referred to as an IAB node.

[0130] 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.

[0131] The user terminal 20 may also be a terminal that supports at least one of communication modes such as LTE, LTE-A, and 5G.

[0132] 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.

[0133] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the radio access schemes for UL and DL.

[0134] 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.

[0135] 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.

[0136] User data, high-layer control information, system information block (SIB), etc. are transmitted through PDSCH. User data, high-layer control information, etc. can also be transmitted through PUSCH. In addition, master information block (MIB) can also be transmitted through PBCH.

[0137] 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.

[0138] In addition, the DCI for scheduling the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI for scheduling the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be replaced by DL data, and the PUSCH may also be replaced by UL data.

[0139] 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.

[0140] A search space may also correspond to a PDCCH candidate corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. In addition, the "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting" and the like in the present disclosure may also be interchangeable.

[0141] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted through PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted through PRACH.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] In addition, in the wireless communication system 1, as an uplink reference signal (Uplink Reference Signal (UL-RS)), a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0146] (Base Station)

[0147] Figure 8 1 is a diagram showing an example of a structure of a base station involved in one embodiment. The base station 10 includes a control unit 110, a transmitting and receiving unit 120, a transmitting and receiving antenna 130, and a transmission path interface (transmission line interface) 140. In addition, the control unit 110, the transmitting and receiving unit 120, the transmitting and receiving antenna 130, and the transmission path interface 140 may each be provided with more than one.

[0148] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also assumed that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0149] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0150] 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.

[0151] The transmitting and receiving unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measuring unit 123. The baseband unit 121 may also include a transmitting processing unit 1211 and a receiving processing unit 1212. The transmitting and receiving unit 120 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0152] 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.

[0153] The transmitting / receiving antenna 130 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0154] 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.

[0155] 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.

[0156] The sending and receiving unit 120 (sending processing unit 1211), for example, may also perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. on the data and control information obtained from the control unit 110 to generate a bit string to be sent.

[0157] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing (filtering processing), discrete Fourier transform (Discrete Fourier Transform (DFT)) processing (as needed), inverse fast Fourier transform (Inverse Fast Fourier Transform (IFFT)) processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0158] 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 .

[0159] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filter processing, demodulation to a baseband signal, etc. on the signal in the radio frequency band received by the transmitting and receiving antenna 130 .

[0160] The sending and receiving unit 120 (receiving processing unit 1212) can also apply analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to obtain user data, etc.

[0161] 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.

[0162] The transmission path interface 140 can also send and receive signals (return signaling) between devices included in the core network 30, other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0163] In addition, the transmission unit and the reception unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmission and reception unit 120 , the transmission and reception antenna 130 , and the transmission path interface 140 .

[0164] The transmitting and receiving unit 120 may also transmit information indicating activation or deactivation of the panel.

[0165] The control unit 110 may also determine whether to perform a communication operation using the panel or not using the panel in the terminal after a certain offset period based on at least one of the reception timing of information indicating activation or deactivation of the panel and the sending timing of a delivery confirmation signal for the information.

[0166] (User Terminal)

[0167] Fig. 92 is a diagram showing an example of a configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. In addition, the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may each be provided with one or more.

[0168] In addition, in this example, the functional blocks of the characteristic parts in this embodiment are mainly shown, and it is also conceivable that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0169] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which the present disclosure relates.

[0170] 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.

[0171] The transmitting and receiving unit 220 may also include a baseband unit 221, an RF unit 222, and a measuring unit 223. The baseband unit 221 may also include a transmitting processing unit 2211 and a receiving processing unit 2212. The transmitting and receiving unit 220 may be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting and receiving circuit, etc., which are described based on the common knowledge in the technical field involved in the present disclosure.

[0172] 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.

[0173] The transmitting / receiving antenna 230 can be constituted by an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0174] 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.

[0175] 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.

[0176] The sending and receiving unit 220 (sending processing unit 2211) can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0177] 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.

[0178] 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 activated (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.

[0179] 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 .

[0180] 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 .

[0181] The sending and receiving unit 220 (receiving processing unit 2212) can also apply analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0182] 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.

[0183] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0184] The transmitting and receiving unit 220 may also receive information related to activation or deactivation of at least one of the plurality of panels (eg, at least one of RRC signaling, MAC CE, and DCI). The control unit 210 may also use one of the plurality of panels for transmission or reception of a specific signal based on the information.

[0185] The information may also include at least one of an identifier corresponding to the panel, a serving cell identifier, and a bandwidth part (BWP) identifier.

[0186] The information may also indicate an association of the panel with a particular signal.

[0187] The control unit 210 may also support transmission or reception of a specific signal using the deactivated panel.

[0188] The transceiver unit 220 may also receive information indicating activation or deactivation of the panel.

[0189] The control unit 210 can also be controlled so that a communication operation utilizing the panel or a communication operation not utilizing the panel is performed after a certain offset period based on at least one of the reception timing of information indicating activation or deactivation of the panel (for example, setting information of the panel) and the sending timing of a delivery confirmation signal for the information.

[0190] The offset period may be determined in units of at least one of a subframe, a time slot, a subslot, and a symbol based on the subcarrier spacing of a downlink control channel used in receiving panel setting information or the subcarrier spacing of an uplink control channel used in sending a delivery confirmation signal.

[0191] The offset period when activation is instructed and the offset period when deactivation is instructed may be set separately.

[0192] The control unit 210 may determine the offset period based on whether the transmission configuration indication state of the downlink control channel used in receiving the panel setting information is activated or whether the spatial relationship information of the uplink control channel used in transmitting the delivery confirmation signal is activated.

[0193] (Hardware Structure)

[0194] 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.

[0195] 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.

[0196] 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.10 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0197] In addition, in the present disclosure, the terms such as device, circuit, equipment, section, unit, etc. can be used interchangeably. The hardware structure of the base station 10 and the user terminal 20 can be configured to include one or more of the devices shown in the figure, or to exclude some of the devices.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] In addition, the processor 1001 reads the program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and performs various processes based on them. As a program, a program that causes a computer to perform at least a part of the operations described in the above-mentioned embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated in the processor 1001, and the same can be implemented for other functional blocks.

[0202] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing the wireless communication method involved in one embodiment of the present disclosure.

[0203] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical disk (such as a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray (Blu-ray) (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, a key drive), a magnetic stripe, a database, a server, or at least one of other suitable storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0204] The communication device 1004 is hardware (transmitting and receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, etc. In order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the above-mentioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. may also be realized by the communication device 1004. The transmitting and receiving unit 120 (220) may also be realized by physically or logically separating the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0205] 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).

[0206] In addition, the processor 1001, the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0207] 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.

[0208] (Variation Example)

[0209] 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.

[0210] 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).

[0211] 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.

[0212] 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.

[0213] 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.

[0214] 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.

[0215] For example, a subframe may be referred to as a TTI, a plurality of consecutive subframes may be referred to as a TTI, and a time slot or a mini time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0216] 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.

[0217] TTI may also be a transmission time unit for a data packet (transport block), a code block, a code word, etc. that has been channel-coded, and may also be a processing unit for scheduling, link adaptation, etc. In addition, when TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0218] In addition, when a time slot or a mini time slot is called TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) can also be the minimum time unit of scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit of scheduling can also be controlled.

[0219] 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.

[0220] 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.

[0221] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0222] 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.

[0223] 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.

[0224] In addition, a resource block may be composed of one or more resource elements (RE). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0225] Bandwidth Part (BWP) (also referred to as partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, common RBs may also be identified by the index of the RB relative to the common reference point of the carrier. PRBs may also be defined in a BWP and numbered within the BWP.

[0226] 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.

[0227] 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".

[0228] 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.

[0229] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0230] In the present disclosure, the names used for parameters, etc. are not limiting in all respects. Furthermore, the mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not limiting in all respects.

[0231] Information, signals, etc. described in this disclosure may also be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be mentioned throughout the above description may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0232] 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.

[0233] 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.

[0234] 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.

[0235] 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)).

[0236] 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).

[0237] 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).

[0238] 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.

[0239] 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.

[0240] 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.

[0241] 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.

[0242] 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.

[0243] 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.

[0244] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0245] There are also cases where a mobile station is referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client or some other appropriate terminology.

[0246] 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.

[0247] In addition, the base station in the present disclosure may also be replaced by a user terminal. For example, the various methods / implementations of the present disclosure may also be applied to a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple user terminals (for example, it may also be referred to as device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it may also be set as a structure in which the user terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. may also be replaced by side channels.

[0248] 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.

[0249] In the present disclosure, operations are assumed to be performed by a base station, and sometimes by its upper node depending on the situation. Obviously, in a network including one or more network nodes having a base station, various operations performed for communication with a terminal can be performed by a base station, one or more network nodes other than the base station (for example, Mobility Management Entity (MME)), Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0250] 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.

[0251] 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.).

[0252] The phrase “based on” used in the present disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on”.

[0253] Any reference to an element using the terms "first", "second", etc. used in this disclosure does not fully define the amount or order of these elements. These terms can be used in this disclosure as a convenient method to distinguish between two or more elements. Therefore, reference to the first and second elements does not mean that only two elements can be used or that the first element must take precedence over the second element in some form.

[0254] The term "determining" used in the present disclosure may include a variety of operations. For example, "determining" may also refer to situations where judging, calculating, computing, processing, deriving, investigating, looking up (for example, searching in a table, database or other data structure), ascertaining, etc. are regarded as performing "determining".

[0255] In addition, "judgment (decision)" may also be a situation where receiving (for example, receiving information), sending (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc. are regarded as making a "judgment (decision)".

[0256] In addition, "judgment (decision)" can also be regarded as a situation where resolving, selecting, choosing, establishing, comparing, etc. are regarded as a situation where "judgment (decision)" is performed. That is, "judgment (decision)" can also be regarded as a situation where some actions are regarded as a situation where "judgment (decision)" is performed.

[0257] In addition, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)” and so on.

[0258] The “maximum transmit power” recorded in the present disclosure may refer to the maximum value of the transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated UE maximum transmit power).

[0259] 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".

[0260] 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.

[0261] 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".

[0262] 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.

[0263] 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.

[0264] 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 receives a medium access control element (MAC CE) indicating activation of a sending setting indication state (TCI state); and a control unit that controls so that a communication operation using the TCI state is performed after a certain offset period starting from at least one of a reception timing of the MAC CE and a transmission timing of a delivery confirmation signal for the MAC CE, The control unit determines the offset period based on whether a TCI state used in a communication operation after the offset period is activated.

2. The terminal according to claim 1, characterized in that The offset period is determined in units of at least one of a subframe, a slot, a subslot, and a symbol based on a subcarrier spacing of an uplink control channel used for transmission of the delivery confirmation signal.

3. The terminal according to claim 1, characterized in that: The control unit determines the offset period by adding a specific value when the TCI state is not activated.

4. The terminal according to claim 3, characterized in that: The specific value is based on a value corresponding to a capability of the terminal.

5. A wireless communication method, which is a wireless communication method of a terminal, characterized in that: have: The step of receiving a medium access control element (MAC CE) indicating sending an activation setting indication state (TCI state); A step of controlling so that a communication operation using the TCI state is performed after a certain offset period starting from at least one of a reception timing of the MAC CE and a transmission timing of a delivery confirmation signal for the MAC CE; as well as The step of the offset period is determined based on whether the TCI state used in the communication operation after the offset period is activated.

6. A base station, characterized in that: have: a sending unit, sending a medium access control element (MAC CE) indicating activation of a setting indication state (TCI state); and a control unit that determines that a communication operation using the TCI state is performed in the terminal after a certain offset period starting from at least one of the reception timing of the MAC CE and the transmission timing of the delivery confirmation signal for the MAC CE, The control unit determines the offset period based on whether a TCI state used in a communication operation after the offset period is activated.

7. A system comprising a terminal and a base station, characterized in that: The terminal has: A receiving unit receives a medium access control element (MAC CE) indicating activation of a sending setting indication state (TCI state); and a control unit that controls so that a communication operation using the TCI state is performed after a certain offset period starting from at least one of a reception timing of the MAC CE and a transmission timing of a delivery confirmation signal for the MAC CE, The control unit determines the offset period based on whether the TCI state used in the communication operation after the offset period is activated, The base station has: A sending unit, sending the MAC CE; as well as The control unit determines that a communication operation utilizing the TCI state is performed in the terminal after a certain offset period starting from at least one of the reception timing of the MAC CE and the transmission timing of the delivery confirmation signal for the MAC CE.

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