WO2021199391A1 - Terminal, wireless communication method, and base station - Google Patents

Abstract

A terminal according to one aspect of the present disclosure comprises: a transmission unit which transmits a report on activation or deactivation for a panel; and a control unit which controls at least one among the resending of the report and the activation or deactivation of the panel, on the basis of at least one among whether or not the approval information is received for the report and the contents of the approval information.

Description

Terminals, wireless communication methods and base stations

This disclosure relates to terminals, wireless communication methods and base stations in next-generation mobile communication systems.

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

A successor system to LTE (for example, 5th generation mobile communication system (5G), 5G + (plus), New Radio (NR), 3GPP Rel.15 or later, etc.) is also being considered.

In an existing LTE system (eg, 3GPP Rel.8-14), the user terminal (User Equipment (UE)) is a UL data channel (eg, Physical Uplink Shared Channel (PUSCH)) and a UL control channel (eg, Physical Uplink). Uplink Control Information (UCI) is transmitted using at least one of the Control Channel (PUCCH).

In future wireless communication systems (eg, NR), the UE may determine the DL receive beam (spatial domain receive filter) and the UL transmit beam (spatial domain transmit filter) based on the information notified by the base station. It is being considered. Further, it is considered that the UE switches a plurality of UE panels (panel, antenna panel) to perform DL reception and UL transmission.

However, it is not clear how the UE controls panel switching (eg, activate / deactivate). Failure to properly control panel activation / deactivation may result in reduced system performance such as increased power consumption and reduced beam gain.

Therefore, one of the purposes of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately control panel switching.

The terminal according to one aspect of the present disclosure is based on the transmission unit that transmits a report on activation or deactivation to the panel, the presence / absence of reception of approval information for the report, and at least one of the contents of the approval information. It is characterized by having a control unit that controls at least one of retransmission and activation or deactivation of the panel.

According to one aspect of the present disclosure, panel switching can be appropriately controlled.

FIG. 1 shows 3GPP Rel. It is a figure which shows the panel use of the UE in 15. 2A and 2B are diagrams showing an example of the A / D reporting operation of the panel determined by the UE. FIG. 3 is a diagram showing an example of the UE operation of the A / D report of the panel according to the first aspect. 4A and 4B are diagrams showing an example of the UE operation of the A / D report of the panel according to the second aspect. 5A and 5B are diagrams showing an example of the UE operation of the A / D report of the panel according to the third aspect. FIG. 6 is a diagram showing another example of the UE operation of the A / D report of the panel according to the third aspect. FIG. 7 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment. FIG. 8 is a diagram showing an example of the configuration of the base station according to the embodiment. FIG. 9 is a diagram showing an example of the configuration of the user terminal according to the embodiment. FIG. 10 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment.

FIG. 1 shows 3GPP Rel. It is a figure which shows the panel use of the UE in 15. Rel. In 15, the selection / use of the uplink (UL) panel of the user terminal (User Equipment (UE)) is transparent to the network (NW, eg, base station, gNB). The UE uses only one panel at a time for UL transmission and does not use multiple panels at the same time. In the example shown in FIG. 1, the UE uses Panel # 1 for UL transmission. The UE can also dynamically switch and use the panel to be used by an implicit method (notification).

However, Rel. At 15, the UE constantly powers on a plurality of panels to support beam management. Since the UE always turns on the power of the panel, when the communication speed of the panel in use decreases due to an obstacle or the like, the UE can quickly switch to another panel, and the performance is improved. However, there is a problem that power consumption is large and inefficiency is caused by keeping the power of a plurality of panels on at all times.

It is effective to deactivate panels that are not used by the UE in order to optimize the power consumption of the UE. Rel. In 16, the activation / deactivation of the UE panel depends on the implementation of the UE and is not recognized by the base station (eg, gNB) (transparent to the base station). There is no mechanism to support efficient activation / deactivation of the UE panel and to align the activation / deactivation information of the UE panel between the base station and the UE.

If the UE panel is not activated / deactivated properly, the system performance may deteriorate due to an increase in power consumption and a decrease in beam gain.

Therefore, Rel. In 17 and later, it is considered to control the activation / deactivation switching of the UE panel so as to be shared between the UE and the base station. For example, activation / deactivation of the UE panel may be controlled (or determined, determined) by the UE and reported (or notified) to the base station (reporting operation A). Alternatively, the activation / deactivation of the UE panel may be reported by the UE and confirmed (approved) by the base station (reporting operation B).

<Report operation A>
FIG. 2A shows an example in which the UE controls the activation / deactivation of the panel of the own terminal (hereinafter, also referred to as A / D) and notifies the base station of information that the panel is activated / deactivated. Is shown.

For example, the UE determines the activation / deactivation of the panel of the own terminal, and activates / deactivates the determined panel. It also reports information about the activate / deactivate panel to the base station. The UE performs an operation corresponding to the panel to be activated / deactivated after a lapse of a predetermined period after reporting the information regarding the activation / deactivation of the panel to the base station.

The predetermined period may be called an offset period. The offset period may be defined by a predetermined value. The predetermined value may be changed according to the subcarrier interval set in the channel (for example, PUCCH / PUSCH) in which the report of information regarding activation / deactivation (hereinafter, also referred to as A / D report) is used.

The predetermined value may be represented by at least one of a first value (for example, X) and a second value indicating the number of slots (for example, N _slot ^{subframe, μ).} FIG. 2A shows a case where the offset period is X. X may be predefined in the specification. Alternatively, X may be determined according to the UE capability (eg, UE capability). In this case, the UE may report the UE capability information (for example, X corresponding to the UE capability) to the base station. Alternatively, X may 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 notify the UE of X based on the UE capability information reported by the UE.

For example, when the UE reports information on activation / deactivation in slot # n, the UE performs an operation corresponding to a panel that activates / deactivates from the first slot after slot # n + X. Slots may be read as subframes, subslots, or symbols. The operation corresponding to the panel to be activated may be read as the operation using the panel to be activated. The operation corresponding to the panel to be deactivated may be read as the operation not to use the panel to be deactivated.

When reporting the activation of a panel, the UE may control to perform an operation (or communication operation) using the activated panel after the offset period (for example, X) has elapsed. When reporting the deactivation of a panel, the UE may control not to perform (or stop) the operation using the deactivating panel after the offset period elapses.

The operation using the panel (or communication operation) refers to the transmission processing / reception processing using the panel, for example, the blind detection operation of PDCCH in the set search space, the PDSCH scheduled from NW to DCI, etc. It may mean at least one of the reception operation of, the transmission operation of PUSCH scheduled by DCI or the like from NW, and the transmission operation of PUCCH.

<Report operation B>
In FIG. 2B, the UE reports (or requests) to the base station that the panel of the own terminal is requested to be activated / deactivated, and after being confirmed (or approved) by the base station, the panel is activated / deactivated. An example of activation is shown. The UE reports the panel to be activated / deactivated to the base station, but the panel may not be activated / deactivated until confirmation / approval from the base station is received.

For example, the UE determines the activation / deactivation of the panel of its own terminal (for example, the panel to be activated / deactivated), and reports (or requests) the activation / deactivation of the determined panel to the base station. The base station sends information (hereinafter, also referred to as approval information) notifying the activation / deactivation approval (or trigger / request) of the panel to the UE in response to the report (or request) from the UE. May be good.

The UE performs an operation corresponding to the panel for activating / deactivating after a lapse of a predetermined period after receiving the approval information transmitted from the base station. The predetermined period may be referred to as an offset period. FIG. 2B shows a case where the offset period is 3N _slot ^{subframe, μ} (+ X). The offset period is _{not limited to 3N slot} ^{subframe, μ} , and other values may be set.

For example, if the UE reports information about activation / deactivation in slot # n, the UE responds to a panel that activates / deactivates from the first slot after _{slot n + 3N slot} ^{subframe, μ + (X).} conduct. Slots may be read as subframes, subslots, or symbols. The operation corresponding to the panel to be activated may be read as the operation using the activated panel. The operation corresponding to the deactivated panel may be read as the operation not using the deactivated panel.

When the activation of the panel is approved, the UE may control to perform an operation (or a communication operation) using the panel for which the activation is approved after the offset period (for example, X) has elapsed. If the panel deactivation is approved, the UE may control the deactivation-approved panel to not operate (or stop) after the offset period has elapsed.

When the report operation B is applied, the UE reports to the base station about the panel to be activated / deactivated, but the panel cannot be activated / deactivated until the approval information from the base station is received. In this case, after the UE reports the A / D (or after triggering the A / D report), if the approval information from the base station cannot be received, or the approval information from the base station is not approved (for example, the approval information). Is negative), the question is how to control the UE operation.

Therefore, the present inventors examined the UE operation after reporting the activation / deactivation of the UE panel, and conceived the present embodiment.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. The wireless communication method and each aspect according to each embodiment may be applied individually or in combination. In the present disclosure, "A / B" may be read as "at least one of A and B". The "notification" in the present disclosure may be read as "instruction", "setting", and "transmission".

Hereinafter, the "panel" of the UE in the present disclosure refers to "Reference Signal (RS) port group", "Demodulation Reference Signal (DMRS) port group", "Sounding Reference Signal (SRS) port group", "RS resource group", and the like. "DMRS resource group", "SRS resource group", "beam group", "Transmission Configuration Indication (TCI) state group", "spatial relation group", "SRS resource indicator (SRI) group", or " It may be read as "antenna port group".

Activation in the present disclosure may mean turning on the power of the panel or activating the panel. The active state is a state in which blind detection of the downlink control channel (Physical Downlink Control Channel (PDCCH)) can be performed in the set search space, and the downlink shared channel (Downlink Control Information (DCI)) scheduled from the NW. It may mean at least one of a state in which Physical Downlink Shared Channel (PDSCH) can be received and a state in which NW can transmit UL data channels scheduled by DCI (for example, Physical Uplink Shared Channel (PUSCH)). ..

Further, deactivation in the present disclosure may mean turning off the power of the panel or deactivating the panel. The deactive state is a state in which blind detection of PDCCH is not required in the set search space, a state in which NW is not required to receive PDSCH scheduled by DCI, etc., and PUSCH scheduled by DCI, etc. is transmitted from NW. It may mean at least one of the states in which it is not required.

Further, "activation" in the present disclosure may be read as activation, activation, update, or update. "Deactivate" in the present disclosure may be read as deactivation, deactivation, deactivation, or suspension.

The positive content of the approval information sent from the base station means that the base station approves the panel for which the UE has requested activation / deactivation as requested by the UE. For example, if the UE reports that it requests the activation of panel # 0, the information approving the activation of panel # 0 may be referred to as positive approval information.

On the other hand, if the content of the approval information transmitted from the base station is negative, it means that the base station does not approve the panel for which the UE requests activation / deactivation as requested by the UE. For example, if the UE reports that it requests the activation of panel # 0, the information that does not approve the activation of panel # 0 may be referred to as negative approval information.

In the following description, the case where the reporting operation B is applied will be described as an example, but the present embodiment is not limited to this. This embodiment may be applied to the UE operation (for example, resending the A / D report) after the UE reports the A / D in the reporting operation A.

(Wireless communication method)
When the UE controls the A / D operation based on the approval information (for example, confirmation information) transmitted from the base station for the A / D report of the panel (UE panel) of the own terminal, the following case 1 or case UE operation in at least one of 2 may be specified.

<Case 1>
After the UE sends (or triggers) an A / D report, the UE assumes that the approval information sent by the base station is either positive confirmation or negative. You may. The base station may send approval information to the UE regardless of whether it agrees or disagrees with (or does not agree with) the panel A / D request reported by the UE.

[Case 1-1]
UE behavior may be specified when the UE does not receive approval information from the base station.

[Case 1-2-1]
UE operation when the UE receives approval information having negative contents (hereinafter, also referred to as negative approval information) from the base station may be specified.

[Case 1-2-2]
UE behavior may be specified when the UE receives negative approval information from the base station and the base station notifies the UE which panel the UE should activate (or deactivate). In this case, the approval information may include a plurality of bits for notifying the panel ID to be activated (or deactivated) by the UE, instead of one bit for notifying the positive / active.

[Case 1-3]
UE operation when the UE receives approval information with positive contents (hereinafter, also referred to as positive approval information) from the base station may be specified.

<Case 2>
After the UE transmits (or triggers) the A / D report, the UE may assume that the approval information transmitted from the base station is only positive confirmation. The base station may control to send the approval information to the UE if it agrees with the request of the panel A / D reported from the UE, and not to send the approval information to the UE if it does not agree.

[Case 2-1]
UE behavior may be specified when the UE does not receive approval information from the base station.

[Case 2-2]
The UE operation when the UE receives the approval information (here, the positive approval information) from the base station may be specified.

<Number of A / D report panels>
The UE may report the A / D for a particular panel (eg, one panel) in each A / D report. In this case, the base station may transmit approval information for the A / D report of a specific panel from the UE to the UE (option A). Option A may specify at least one UE operation in Case 1 and Case 2.

The UE may report A / D for a plurality of panels in each A / D report. In this case, the base station may transmit approval information for A / D reports of a plurality of panels from the UE to the UE (option B). Option B may specify at least one UE operation in Case 1 and Case 2.

Option B may specify the UE operation in the case where the approval information of the plurality of panels is transmitted separately (for example, case A). Alternatively, UE operation in cases where approval information for multiple panels is jointly transmitted, but different content (eg, positive / active) instructions are supported for different panels (eg, case B). May be specified.

An example of UE operation applicable to each case will be described below. In the following description, an example of UE operation corresponding to Case 1-1 or Case 2-1 will be described in the first aspect. Further, an example of UE operation corresponding to Case 1-2-1 or Case 1-2-2 will be described in the second aspect. Further, an example of UE operation corresponding to Case 1-3 or Case 2-2 will be described in the third aspect. Further, an example of UE operation corresponding to Case A or Case B in Option B will be described in the fourth aspect.

(First aspect)
In the first aspect, the UE operation when the UE that transmits (or triggers) the A / D report does not receive the approval information from the base station will be described.

If the UE does not receive the approval information from the base station within a predetermined time period after transmitting the A / D report, the UE may transmit (or trigger) the A / D report again. Good (see Figure 3). That is, the UE may control to resend the A / D report if the approval information cannot be received.

The predetermined time period may be specified by the retransmission timer. The retransmission timer may be referred to as a retransmission control timer, a retransmission timer, a reTx timer, a reTx-timer, or a first timer. The retransmission timer may be defined in the specifications, or may be notified from the base station to the UE by higher layer signaling.

The resend timer may be started (or restarted) when the UE transmits (or triggers) an A / D report. The UE transmits (or triggers) the A / D report and starts the retransmission timer, and if the approval information cannot be received from the base station within the period of the retransmission timer, the UE retransmits the A / D report of the panel. You may.

The UE may be controlled to retransmit the A / D report of the panel when the predetermined criteria (or the predetermined criteria) are satisfied when the approval information cannot be received from the base station within the retransmission timer period. .. In FIG. 3, the UE starts (or restarts) the retransmission timer at the same time as transmitting the A / D report of a specific panel (here, panel # 0), and the retransmission timer expires and sets a predetermined reference. The case where the A / D report of panel # 0 is retransmitted when the condition is satisfied is shown. That is, the retransmission of the A / D report may be controlled based on the retransmission timer and a predetermined reference.

The predetermined standard may be, for example, whether or not the value of the received power (for example, RSRP) of the reference signal or beam received by using the panel is equal to or less than the predetermined value. For example, the activation / deactivation criteria may be determined based on the CSI-RS measurement result, the synchronization signal block measurement result, and the PDCCH / PDSCH performance. The performance may be a block error rate (BLER). The BLER may be a hypothetical BLER (Hypothesis BLER) used in beam failure detection. The hypothetical BLER may be read as SINR.

In this way, even if the approval information cannot be received from the base station, the A / D of the panel in the UE can be obtained by re-requesting the approval information from the base station by resending the A / D report of the panel. Can be done properly.

(Second aspect)
In the second aspect, the UE operation when the UE that transmits (or triggers) the A / D report receives the negative approval information from the base station will be described.

After transmitting the A / D report, if the UE receives negative approval information for the A / D report, the UE may retransmit (or trigger) the A / D report after a predetermined time period (or trigger). 4A, B). That is, the UE may control to resend the A / D report when it receives the negative approval information.

A timer for retransmission may be used for a predetermined time period (option 2-1) (see FIG. 4A), or a timer different from the timer for retransmission may be used (option 2-2) (FIG. 4B). reference).

<Option 2-1>
The UE starts (or restarts) the resend timer when it receives negative approval information for the A / D report of a specific panel (here, panel # 0), and after the retransmission timer period elapses. The A / D report may be retransmitted (or triggered) (or after the retransmission timer expires) (see FIG. 4A). In other words, the transmission of the A / D report of the same panel (here, panel # 0) may be restricted during the period in which the retransmission timer started based on the reception of the negative approval information is running.

The resending timer during running may be stopped / canceled and newly started, or the resending timer may be started separately from the resending timer during running.

When option 2-1 is applied, the UE starts (or restarts) the retransmission timer at the same time as transmitting the A / D report of a specific panel (here, panel # 0). Retransmission of the A / D report on panel # 0 is controlled when the retransmission timer started based on the transmission of the A / D report expires and meets a predetermined criterion.

On the other hand, if the UE receives the negative approval information before the retransmission timer started based on the transmission of the A / D report expires, the UE starts (or re-starts) the retransmission timer together with the reception of the negative approval information. Start). Retransmission of the A / D report on panel # 0 is controlled when the resend timer started based on the receipt of the negative approval information expires and meets the predetermined criteria.

As described above, in option 2-1 the retransmission timer controls the retransmission of the A / D report when the approval information for the A / D report cannot be received, and A when the negative approval information for the A / D report is received. It may be used for retransmission control of / D report. As a result, it is possible to suppress an increase in the number of timers set in the UE.

<Option 2-2>
When the UE receives the negative approval information for the A / D report of a specific panel (here, panel # 0), the UE starts (or restarts) another timer different from the retransmission timer, and the other timer The A / D report may be retransmitted (or triggered) after the timer period has elapsed (or after the other timer has expired) (see FIG. 4B). In other words, the transmission of the A / D report of the same panel (here, panel # 0) may be restricted during the period in which the other timer started based on the reception of the negative approval information is running.

The other timer different from the retransmission timer may be called a prohibition timer, a retransmission prohibition timer, a prohibit timer, or a second timer. The prohibition timer may be defined in the specification, or may be notified from the base station to the UE by higher layer signaling.

The prohibition timer may be started (or restarted) when the UE receives the negative approval information. The UE may receive the negative approval information and start the prohibition timer, and resend the panel A / D report after the prohibition timer period has elapsed.

When applying option 2-2, the UE starts (or restarts) the retransmission timer at the same time as transmitting the A / D report of the specific panel (here, panel # 0). Retransmission of the A / D report on panel # 0 may be controlled when the retransmission timer started based on the transmission of the A / D report expires and meets a predetermined criterion.

On the other hand, if the UE receives the negative approval information before the retransmission timer started based on the transmission of the A / D report expires, the UE starts (or re-starts) the prohibition timer together with the reception of the negative approval information. Start). Retransmission of the A / D report on panel # 0 may be controlled when the prohibition timer, which is started based on the receipt of the negative approval information, expires and meets the predetermined criteria.

Note that the setting / application of the retransmission timer and the prohibition timer may be independent or related.

For example, when the UE receives the negative approval information (or starts the prohibition timer), the UE may control to stop the retransmission timer during running (option 2-2-1).

Alternatively, the UE may control to restart the retransmission timer during running when the negative approval information is received (or when the prohibition timer is started) (option 2-2-2). The retransmission timer during running may be stopped / canceled and newly started, or the retransmission timer may be started separately from the retransmission timer during running.

In this case, if at least one of the retransmission timer and the prohibition timer is running, the UE does not send (or trigger) the A / D report of the same panel as the reported panel (and approval information has not been received). It may be controlled as follows. That is, a configuration in which the retransmission of the A / D report is restricted when at least one of the retransmission timer and the prohibition timer is running, in other words, the A / D when both the retransmission timer and the prohibition timer expire. The configuration may be such that the report can be resent.

Alternatively, when the retransmission timer is running and the prohibition timer expires, the A / D report of the same panel as the reported panel (and approval information has not been received) may be allowed to be resent.

Alternatively, the UE may control the retransmission timer during running to continue as it is when receiving the negative approval information (or when the prohibition timer is started) (option 2-2-3).

In this case, if at least one of the retransmission timer and the prohibition timer is running, the UE does not send (or trigger) the A / D report of the same panel as the reported panel (and approval information has not been received). It may be controlled as follows. That is, a configuration in which the retransmission of the A / D report is restricted when at least one of the retransmission timer and the prohibition timer is running, in other words, the A / D when both the retransmission timer and the prohibition timer expire. The configuration may be such that the report can be resent.

Alternatively, when the retransmission timer is running and the prohibition timer expires, the A / D report of the same panel as the reported panel (and approval information has not been received) may be allowed to be resent.

(Third aspect)
In the third aspect, the UE operation when the UE that transmits (or triggers) the A / D report receives the positive approval information from the base station will be described.

When the UE receives the positive approval information for the A / D report within a predetermined time period after transmitting the A / D report, there is a timer used for the retransmission control of the A / D report. , The timer may be controlled to be stopped (option 3-1). Alternatively, the UE may control a predetermined UE operation based on a timer used for retransmission control of the A / D report (option 3-2). Alternatively, the UE may control a predetermined UE operation based on a plurality of timers used for retransmission control of the A / D report (option 3-3).

<Option 3-1>
If the UE receives positive approval information for the A / D report of a particular panel (here, panel # 0), it may stop the retransmission timer started based on the transmission of the A / D report. Good (see Figure 5A). The UE may then control panel # 0 to activate / deactivate. Further, a timer based on the reception of positive approval information (for example, a prohibition timer) may not be set.

<Option 3-2>
The UE starts (or restarts) the resend timer when it receives positive approval information for the A / D report of a specific panel (here, panel # 0), and based on the resend timer. The new A / D reporting operation may be controlled (see FIG. 5B).

For example, if the resend timer started based on the receipt of positive approval information is running, send a new A / D report to the same panel (here, panel # 0) as the panel associated with the positive approval information (in this case, panel # 0). Alternatively, the trigger) may be allowed (option 3-2-1).

Alternatively, if the resend timer started based on the receipt of the positive approval information is running, send a new A / D report to the same panel (here, panel # 0) as the panel associated with the positive approval information (in this case, panel # 0). Alternatively, the trigger) may be restricted (option 3-2-2).

For example, assume that the UE reports that it requests activation of panel # 0 and receives positive approval information from the base station. In this case, after receiving the positive approval information, the UE controls not to report that the deactivation of panel # 0 is requested for a predetermined period (for example, when the retransmission timer is running). May be good. As a result, it is possible to prevent the UE from frequently sending a report of a panel state change request.

<Option 3-3>
When the UE receives the positive approval information for the A / D report of a specific panel (here, panel # 0), the UE starts (or restarts) another timer different from the resend timer, and the resend The new A / D reporting operation may be controlled based on at least one of the timer and the other timer (see FIG. 6).

The other timer different from the retransmission timer may be the prohibition timer described in the second aspect. The prohibition timer may be started (or restarted) when the UE receives positive approval information. The UE receives the positive approval information and starts the prohibition timer, and if the prohibition timer is running, a new A / for the same panel as the panel related to the positive approval information (here, panel # 0). D The transmission (or trigger) of the report may be restricted.

Note that the setting / application of the retransmission timer and the prohibition timer may be independent or related.

For example, the UE may control to stop the retransmission timer during running when the positive approval information is received (or when the prohibition timer is started) (option 3-3-1).

Alternatively, the UE may control to restart the retransmission timer during running when the positive approval information is received (or when the prohibition timer is started) (option 3-3-2).

In this case, if at least one of the resend timer and the prohibition timer is running, the UE will send (or trigger) a new A / D report on the same panel as the reported panel (and positive approval information received). It may be controlled not to do so. That is, when at least one of the retransmission timer and the prohibition timer is running, the transmission or trigger of the new A / D report to the panel that has received the positive approval information may be restricted. In other words, when both the retransmission timer and the prohibition timer have expired, a new A / D report may be transmitted or triggered to the panel that has received the positive approval information.

Alternatively, when the retransmission timer is running and the prohibition timer expires, a new A / D report may be sent or triggered to the panel that has received the positive approval information.

Alternatively, when the UE receives the positive approval information (or when the prohibition timer is started), the UE may control the resend timer during running to continue as it is (option 3-3-2).

In this case, if at least one of the resend timer and the prohibition timer is running, the UE will send (or trigger) a new A / D report on the same panel as the reported panel (and positive approval information received). It may be controlled not to do so. That is, when at least one of the retransmission timer and the prohibition timer is running, the transmission or trigger of the new A / D report to the panel that has received the positive approval information may be restricted. In other words, when both the retransmission timer and the prohibition timer have expired, a new A / D report may be transmitted or triggered to the panel that has received the positive approval information.

Alternatively, when the retransmission timer is running and the prohibition timer expires, a new A / D report may be sent or triggered to the panel that has received the positive approval information.

(Fourth aspect)
In the fourth aspect, the UE operation when the UE transmits (or triggers) A / D reports of a plurality of panels will be described.

When the base station receives the A / D reports of the plurality of panels transmitted from the UE, the base station may transmit the approval information corresponding to the A / D reports of the plurality of panels to the UE.

<Case A>
In the case where the approval information for the plurality of panels is transmitted separately (for example, case A), it is assumed that the timer related to the retransmission of the A / D report is set. In such cases, the timer may be defined or counted separately for each panel.

For example, when the approval information corresponding to the A / D report of each panel is transmitted separately, the retransmission timer / prohibition timer may be set for each panel. For example, the retransmission timer may be set separately based on the transmission timing of the A / D report of each panel. Alternatively, the retransmission timer / prohibition timer may be set separately based on the reception timing of the approval information of each panel.

When a retransmission timer / prohibition timer is set for each panel, even if at least one of the restart timer / prohibition timer start, restart, stop, maintain, and count is controlled separately for each panel. good. The UE may apply at least one of the first to third aspects to each panel to control the A / D reporting operation based on a timer set for each panel.

In this case, at least one of the first to third aspects is applied to each panel, and even if the timer corresponding to the panel is stopped / started / running, it is not affected by the timers of other panels. good.

Alternatively, at least one of the first to third aspects may be applied to each panel, and may affect other panels when the timer corresponding to the panel is stopped / started / restarted. For example, stopping / starting / restarting a timer on one panel may stop / start / restart a timer (or a specific timer) on another panel.

<Case B>
A / D in cases where approval information for multiple panels is jointly transmitted, but different content (eg, positive / active) instructions are allowed for different panels (eg, case B). Suppose a timer is set for resending a report. In such cases, the timer may be defined or counted separately for each report / panel.

If the UE cannot receive the approval information from the base station, the approval information for multiple panels is transmitted jointly, so that the operation of the retransmission timer / prohibition timer (for example, at least start, restart, stop, maintain, and count) One) may be controlled on a report-by-report basis. For example, the UE may apply the first aspect to control the A / D reporting operation.

When the UE receives the negative approval information from the base station, the operation of the retransmission timer / prohibition timer (for example, at least one of start, restart, stop, maintenance, and count) is performed for each panel that receives the negative information. One) may be controlled for each panel. For example, the UE may apply the second aspect to control the A / D reporting operation of each panel that has received the negative approval information.

When the UE receives the positive approval information from the base station, the operation of the retransmission timer / prohibition timer (for example, at least one of start, restart, stop, maintenance, and count) is performed for each panel that receives the positive information. One) may be controlled for each panel. For example, the UE may apply the third aspect to control the A / D reporting operation of each panel that has received the positive approval information.

In each report, when the UE reports the panel status (activate / deactivate) for all the panels, the first to fourth aspects of the reporting panel for the panel in which the change in the panel status is reported. At least one of the embodiments may be applied.

(Wireless communication system)
Hereinafter, the configuration of the wireless communication system according to the embodiment of the present disclosure will be described. In this wireless communication system, communication is performed using any one of the wireless communication methods according to each of the above-described embodiments of the present disclosure or a combination thereof.

FIG. 7 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc. specified by Third Generation Partnership Project (3GPP). ..

Further, the radio communication system 1 may support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between a plurality of Radio Access Technologies (RATs). MR-DC is dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), and dual connectivity between NR and LTE (NR-E). -UTRA Dual Connectivity (NE-DC)) may be included.

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

The wireless communication system 1 has dual connectivity between a plurality of base stations in the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) in which both MN and SN are NR base stations (gNB). )) May be supported.

The wireless communication system 1 includes a base station 11 that forms a macro cell C1 having a relatively wide coverage, and a base station 12 (12a-12c) that is arranged in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. You may prepare. The user terminal 20 may be located in at least one cell. The arrangement, number, and the like of each cell and the user terminal 20 are not limited to the mode shown in the figure. Hereinafter, when the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.

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 (Carrier Aggregation (CA)) and dual connectivity (DC) using a plurality of component carriers (Component Carrier (CC)).

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

Further, the user terminal 20 may perform communication using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.

The plurality of base stations 10 may be connected by wire (for example, optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (for example, NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 corresponding to the higher-level station is an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to a relay station (relay) is IAB. It may be called a node.

The base station 10 may be connected to the core network 30 via another base station 10 or directly. The core network 30 may include at least one such as Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).

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

In the wireless communication system 1, a wireless access method based on Orthogonal Frequency Division Multiplexing (OFDM) may be used. For example, at least one of the downlink (Downlink (DL)) and the uplink (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.

The wireless access method may be called a waveform. In the wireless communication system 1, another wireless access system (for example, another single carrier transmission system, another multi-carrier transmission system) may be used as the UL and DL wireless access systems.

In the wireless communication system 1, as downlink channels, downlink shared channels (Physical Downlink Shared Channel (PDSCH)), broadcast channels (Physical Broadcast Channel (PBCH)), and downlink control channels (Physical Downlink Control) shared by each user terminal 20 are used. Channel (PDCCH)) and the like may be used.

Further, in the wireless communication system 1, as the uplink channel, the uplink shared channel (Physical Uplink Shared Channel (PUSCH)), the uplink control channel (Physical Uplink Control Channel (PUCCH)), and the random access channel shared by each user terminal 20 are used. (Physical Random Access Channel (PRACH)) or the like may be used.

User data, upper layer control information, System Information Block (SIB), etc. are transmitted by PDSCH. User data, upper layer control information, and the like may be transmitted by the PUSCH. Further, the Master Information Block (MIB) may be transmitted by the PBCH.

Lower layer control information may be transmitted by 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 PDSCH and PUSCH.

The DCI that schedules PDSCH may be called DL assignment, DL DCI, etc., and the DCI that schedules PUSCH may be called UL grant, UL DCI, etc. The PDSCH may be read as DL data, and the PUSCH may be read as UL data.

A control resource set (COntrol REsource SET (CORESET)) and a search space (search space) may be used for PDCCH detection. CORESET corresponds to a resource that searches for DCI. The search space corresponds to the search area and search method of PDCCH candidates (PDCCH candidates). One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a search space based on the search space settings.

One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be referred to as a search space set. The "search space", "search space set", "search space setting", "search space set setting", "CORESET", "CORESET setting", etc. of the present disclosure may be read as each other.

Depending on the PUCCH, channel state information (Channel State Information (CSI)), delivery confirmation information (for example, it may be called Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.) and scheduling request (Scheduling Request ( Uplink Control Information (UCI) including at least one of SR)) may be transmitted. The PRACH may transmit a random access preamble to establish a connection with the cell.

In this disclosure, downlinks, uplinks, etc. may be expressed without "links". Further, it may be expressed without adding "Physical" at the beginning of various channels.

In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), and the like may be transmitted. In the wireless communication system 1, the DL-RS includes a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), and a demodulation reference signal (DeModulation). Reference Signal (DMRS)), positioning reference signal (Positioning Reference Signal (PRS)), phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), and the like may be transmitted.

The synchronization signal may be, for example, at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)). The signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be referred to as SS / PBCH block, SS Block (SSB) and the like. In addition, SS, SSB and the like may also be called a reference signal.

Further, in the wireless communication system 1, even if a measurement reference signal (Sounding Reference Signal (SRS)), a demodulation reference signal (DMRS), or the like is transmitted as an uplink reference signal (Uplink Reference Signal (UL-RS)). good. The DMRS may be called a user terminal specific reference signal (UE-specific Reference Signal).

(base station)
FIG. 8 is a diagram showing an example of the configuration of the base station according to the embodiment. The base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission line interface 140. The control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140 may each be provided with one or more.

Note that this example mainly shows the functional blocks of the feature portion in the present embodiment, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. A part of the processing of each part described below may be omitted.

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 described based on the common recognition in the technical field according to the present disclosure.

The control unit 110 may control signal generation, scheduling (for example, resource allocation, mapping) and the like. The control unit 110 may control transmission / reception, measurement, and the like using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140. The control unit 110 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 120. The control unit 110 may perform call processing (setting, release, etc.) of the communication channel, state management of the base station 10, management of radio resources, and the like.

The transmission / reception unit 120 may include a baseband unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transmitter / receiver 120 includes a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on common recognition in the technical fields according to the present disclosure. be able to.

The transmission / reception unit 120 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit. The transmission unit may be composed of a transmission processing unit 1211 and an RF unit 122. The receiving unit may be composed of a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

The transmitting / receiving antenna 130 can be composed of an antenna described based on common recognition in the technical field according to the present disclosure, for example, an array antenna.

The transmission / reception unit 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like. The transmission / reception unit 120 may receive the above-mentioned uplink channel, uplink reference signal, and the like.

The transmission / reception unit 120 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.

The transmission / reception unit 120 (transmission processing unit 1211) processes, for example, Packet Data Convergence Protocol (PDCP) layer processing and Radio Link Control (RLC) layer processing (for example, RLC) for data, control information, etc. acquired from control unit 110. RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), and the like may be performed to generate a bit string to be transmitted.

The transmission / reception unit 120 (transmission processing unit 1211) performs channel coding (may include error correction coding), modulation, mapping, filtering, and discrete Fourier transform (Discrete Fourier Transform (DFT)) for the bit string to be transmitted. The base band signal may be output by performing processing (if necessary), inverse fast Fourier transform (IFFT) processing, precoding, digital-analog conversion, and other transmission processing.

The transmission / reception unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc. on the baseband signal to the radio frequency band, and transmit the signal in the radio frequency band via the transmission / reception antenna 130. ..

On the other hand, the transmission / reception unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, or the like on the signal in the radio frequency band received by the transmission / reception antenna 130.

The transmission / reception unit 120 (reception processing unit 1212) performs analog-digital conversion, fast Fourier transform (FFT) processing, and inverse discrete Fourier transform (IDFT) on the acquired baseband signal. )) Processing (if necessary), filtering, decoding, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing are applied. User data and the like may be acquired.

The transmission / reception unit 120 (measurement unit 123) may perform measurement on the received signal. For example, the measuring unit 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, or the like based on the received signal. The measuring unit 123 has received power (for example, Reference Signal Received Power (RSRP)) and reception quality (for example, Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)). , Signal strength (for example, Received Signal Strength Indicator (RSSI)), propagation path information (for example, CSI), and the like may be measured. The measurement result may be output to the control unit 110.

The transmission line interface 140 transmits / receives signals (backhaul signaling) to / from a device included in the core network 30, another base station 10 and the like, and provides user data (user plane data) and control plane for the user terminal 20. Data or the like may be acquired or transmitted.

The transmission unit and the reception unit of the base station 10 in the present disclosure may be composed of at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140.

The transmission / reception unit 120 may receive a report regarding activation or deactivation for the panel. The transmission / reception unit 120 may transmit approval information for the report.

The control unit 110 may control the reception of the report whose retransmission is controlled based on the presence / absence of reception of the approval information in the terminal and at least one of the contents of the approval information.

(User terminal)
FIG. 9 is a diagram showing an example of the configuration of the user terminal according to the embodiment. The user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230. The control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may each be provided with one or more.

Note that this example mainly shows the functional blocks of the feature portion in the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. A part of the processing of each part described below may be omitted.

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 described based on the common recognition in the technical field according to the present disclosure.

The control unit 210 may control signal generation, mapping, and the like. The control unit 210 may control transmission / reception, measurement, and the like using the transmission / reception unit 220 and the transmission / reception antenna 230. The control unit 210 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 220.

The transmission / reception unit 220 may include a baseband unit 221 and an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transmitter / receiver 220 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on the common recognition in the technical field according to the present disclosure.

The transmission / reception unit 220 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit. The transmission unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

The transmitting / receiving antenna 230 can be composed of an antenna described based on common recognition in the technical field according to the present disclosure, for example, an array antenna.

The transmission / reception unit 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like. The transmission / reception unit 220 may transmit the above-mentioned uplink channel, uplink reference signal, and the like.

The transmission / reception unit 220 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.

The transmission / reception unit 220 (transmission processing unit 2211) performs PDCP layer processing, RLC layer processing (for example, RLC retransmission control), and MAC layer processing (for example, for data, control information, etc. acquired from the control unit 210). , HARQ retransmission control), etc., to generate a bit string to be transmitted.

The transmission / reception unit 220 (transmission processing unit 2211) performs channel coding (may include error correction coding), modulation, mapping, filtering processing, DFT processing (if necessary), and IFFT processing for the bit string to be transmitted. , Precoding, digital-to-analog conversion, and other transmission processing may be performed to output the baseband signal.

Whether or not to apply the DFT process may be based on the transform precoding setting. When the transform precoding is enabled for a channel (for example, PUSCH), the transmission / reception unit 220 (transmission processing unit 2211) transmits the channel using the DFT-s-OFDM waveform. The DFT process may be performed as the transmission process, and if not, the DFT process may not be performed as the transmission process.

The transmission / reception unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc. on the baseband signal to the radio frequency band, and transmit the signal in the radio frequency band via the transmission / reception antenna 230. ..

On the other hand, the transmission / reception unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, or the like on the signal in the radio frequency band received by the transmission / reception antenna 230.

The transmission / reception unit 220 (reception processing unit 2212) performs analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering processing, demapping, demodulation, and decoding (error correction) for the acquired baseband signal. Decoding may be included), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing may be applied to acquire user data and the like.

The transmission / reception unit 220 (measurement unit 223) may perform measurement on the received signal. For example, the measuring unit 223 may perform RRM measurement, CSI measurement, or the like based on the received signal. The measuring unit 223 may measure received power (for example, RSRP), reception quality (for example, RSRQ, SINR, SNR), signal strength (for example, RSSI), propagation path information (for example, CSI), and the like. The measurement result may be output to the control unit 210.

The transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may be composed of at least one of the transmitting / receiving unit 220 and the transmitting / receiving antenna 230.

The transmission / reception unit 220 may send a report regarding activation or deactivation to the panel.

The control unit 210 may control at least one of resending the report and activating or deactivating the panel based on at least one of the reception / non-receipt of the approval information for the report and the content of the approval information.

The control unit 210 may control to resend the report if the approval information cannot be received by the expiration of the first timer started based on the transmission of the report. Further, when the content of the approval information for the report is negative, the control unit 210 has the same content as the report to the panel during the running of the first timer or the second timer started based on the reception of the approval information. You may control not to send the report of. The control unit 210 may control to stop the first timer started based on the transmission of the report when the content of the approval information for the report is positive.

(Hardware configuration)
The block diagram used in the description of the above embodiment shows a block of functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Further, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized by using one device that is physically or logically connected, or directly or indirectly (for example, by two or more devices that are physically or logically separated). , Wired, wireless, etc.) and may be realized using these plurality of devices. The functional block may be realized by combining the software with the one device or the plurality of devices.

Here, the functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and deemed. , Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. Not limited. For example, a functional block (constituent unit) for functioning transmission may be referred to as a transmitting unit (transmitting unit), a transmitter (transmitter), or the like. As described above, the method of realizing each of them is not particularly limited.

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

In this disclosure, the terms of devices, circuits, devices, sections, units, etc. can be read as each other. The hardware configuration of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.

For example, although only one processor 1001 is shown, there may be a plurality of processors. Further, the processing may be executed by one processor, or the processing may be executed simultaneously, sequentially, or by using other methods by two or more processors. The processor 1001 may be mounted by one or more chips.

For each function of the base station 10 and the user terminal 20, for example, by loading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, the processor 1001 performs an operation and communicates via the communication device 1004. It is realized by controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.

Processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, and the like. For example, at least a part of the above-mentioned control unit 110 (210), transmission / reception unit 120 (220), and the like may be realized by the processor 1001.

Further, the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used. For example, the control unit 110 (210) may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and may be realized in the same manner for other functional blocks.

The memory 1002 is a computer-readable recording medium, such as at least a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically EPROM (EEPROM), a Random Access Memory (RAM), or any other suitable storage medium. It may be composed of one. The memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like. The memory 1002 can store a program (program code), a software module, or the like that can be executed to implement the wireless communication method according to the embodiment of the present disclosure.

The storage 1003 is a computer-readable recording medium, and is, for example, a flexible disk, a floppy (registered trademark) disk, an optical magnetic disk (for example, a compact disc (Compact Disc ROM (CD-ROM)), a digital versatile disk, etc.). At least one of Blu-ray® disks, removable disks, optical disc drives, smart cards, flash memory devices (eg cards, sticks, key drives), magnetic stripes, databases, servers, and other suitable storage media. It may be composed of. The storage 1003 may be referred to as an auxiliary storage device.

The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. The communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)). May be configured to include. For example, the transmission / reception unit 120 (220), the transmission / reception antenna 130 (230), and the like described above may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be physically or logically separated from the transmission unit 120a (220a) and the reception unit 120b (220b).

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

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

Further, the base station 10 and the user terminal 20 include a microprocessor, a digital signal processor (Digital Signal Processor (DSP)), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), and the like. It may be configured to include hardware, and a part or all of each functional block may be realized by using the hardware. For example, processor 1001 may be implemented using at least one of these hardware.

(Modification example)
The terms described in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, channels, symbols and signals (signals or signaling) may be read interchangeably. Also, the signal may be a message. The reference signal can also be abbreviated as RS, and may be called a pilot, a pilot signal, or the like depending on the applied standard. Further, the component carrier (Component Carrier (CC)) may be referred to as a cell, a frequency carrier, a carrier frequency, or the like.

The wireless frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the wireless frame may be referred to as a subframe. Further, the subframe may be composed of one or more slots in the time domain. The subframe may have a fixed time length (eg, 1 ms) that is independent of numerology.

Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel. Numerology includes, for example, subcarrier spacing (SubCarrier Spacing (SCS)), bandwidth, symbol length, cyclic prefix length, transmission time interval (Transmission Time Interval (TTI)), number of symbols per TTI, and wireless frame configuration. , A specific filtering process performed by the transmitter / receiver in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.

The slot may be composed of one or more symbols in the time domain (Orthogonal Frequency Division Multiple Access (OFDMA) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.). In addition, the slot may be a time unit based on numerology.

The slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain. Further, the mini slot may be referred to as a sub slot. A minislot may consist of a smaller number of symbols than the slot. A PDSCH (or PUSCH) transmitted in a time unit larger than the minislot may be referred to as a PDSCH (PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (PUSCH) mapping type B.

The wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal. The radio frame, subframe, slot, minislot and symbol may have different names corresponding to each. The time units such as frames, subframes, slots, minislots, and symbols in the present disclosure may be read as each other.

For example, one subframe may be called TTI, a plurality of consecutive subframes may be called TTI, and one slot or one minislot may be called TTI. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms. It may be. The unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.

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

The TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation. When a TTI is given, the time interval (for example, the number of symbols) to which the transport block, code block, code word, etc. are actually mapped may be shorter than the TTI.

When one slot or one minislot is called TTI, one or more TTIs (that is, one or more slots or one or more minislots) may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.

A TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in 3GPP Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like. A TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, a slot, or the like.

The long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms, and the short TTI (for example, shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.

A resource block (Resource Block (RB)) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain. The number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12. The number of subcarriers contained in the RB may be determined based on numerology.

Further, the RB may include one or more symbols in the time domain, and may have a length of 1 slot, 1 mini slot, 1 subframe or 1 TTI. Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.

One or more RBs are 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, and an RB. It may be called a pair or the like.

Further, the resource block may be composed of one or a plurality of resource elements (Resource Element (RE)). For example, 1RE may be a radio resource area of 1 subcarrier and 1 symbol.

Bandwidth Part (BWP) (which may also be called partial bandwidth) represents a subset of consecutive common resource blocks (RBs) for a neurology in a carrier. May be good. Here, the common RB may be specified by the index of the RB with respect to the common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.

The BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL). One or more BWPs may be set in one carrier for the UE.

At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP. In addition, "cell", "carrier" and the like in this disclosure may be read as "BWP".

Note that the above-mentioned structures such as wireless frames, subframes, slots, mini slots, and symbols are merely examples. For example, the number of subframes contained in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots contained in a slot, the number of symbols and RBs contained in a slot or minislot, and included in the RB. The number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.

In addition, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented. For example, radio resources may be indicated by a given index.

The names used for parameters, etc. in this disclosure are not limited in any respect. Further, mathematical formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure. Since the various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements are not limiting in any way. ..

The information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.

In addition, information, signals, etc. can be output from the upper layer to the lower layer and from the lower layer to at least one of the upper layers. Information, signals, etc. may be input / output via a plurality of network nodes.

Input / output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information, signals, etc. can be overwritten, updated, or added. The output information, signals, etc. may be deleted. The input information, signals, etc. may be transmitted to other devices.

The notification of information is not limited to the mode / embodiment described in the present disclosure, and may be performed by using other methods. For example, the notification of information in the present disclosure includes physical layer signaling (for example, downlink control information (DCI)), uplink control information (Uplink Control Information (UCI))), and higher layer signaling (for example, Radio Resource Control). (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals or combinations thereof May be carried out by.

Note that the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), and the like. Further, the RRC signaling may be called an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration) message, or the like. Further, MAC signaling may be notified using, for example, a MAC control element (MAC Control Element (CE)).

In addition, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit notification, but implicitly (for example, by not notifying the predetermined information or another information). May be done (by notification of).

The determination may be made by a value represented by 1 bit (0 or 1), or by a boolean value represented by true or false. , May be done by numerical comparison (eg, comparison with a given value).

Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module. , Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc. should be broadly interpreted.

Further, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, a website where software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.). When transmitted from a server, or other remote source, at least one of these wired and wireless technologies is included within the definition of transmission medium.

The terms "system" and "network" used in this disclosure may be used interchangeably. The "network" may mean a device (eg, a base station) included in the network.

In the present disclosure, "precoding", "precoder", "weight (precoding weight)", "pseudo-colocation (Quasi-Co-Location (QCL))", "Transmission Configuration Indication state (TCI state)", "space". "Spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", Terms such as "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", "panel" are compatible. Can be used for

In the present disclosure, "base station (BS)", "radio base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "Access point", "Transmission point (Transmission Point (TP))", "Reception point (Reception Point (RP))", "Transmission / reception point (Transmission / Reception Point (TRP))", "Panel" , "Cell", "sector", "cell group", "carrier", "component carrier" and the like can be used interchangeably. Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.

The base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (Remote Radio)). Communication services can also be provided by Head (RRH))). The term "cell" or "sector" refers to part or all of the coverage area of at least one of the base stations and base station subsystems that provide communication services in this coverage.

In this disclosure, terms such as "mobile station (MS)", "user terminal", "user equipment (UE)", and "terminal" are used interchangeably. Can be done.

Mobile stations include subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals. , Handset, user agent, mobile client, client or some other suitable term.

At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, or the like. At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like. The moving body may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving body (for example, a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned type). ) May be. It should be noted that at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

Further, the base station in the present disclosure may be read by the user terminal. For example, the communication between the base station and the user terminal is replaced with the communication between a plurality of user terminals (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.). Each aspect / embodiment of the present disclosure may be applied to the configuration. In this case, the user terminal 20 may have the function of the base station 10 described above. In addition, words such as "up" and "down" may be read as words corresponding to communication between terminals (for example, "side"). For example, the upstream channel, the downstream channel, and the like may be read as a side channel.

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

In the present disclosure, the operation performed by the base station may be performed by its upper node (upper node) in some cases. In a network including one or more network nodes having a base station, various operations performed for communication with a terminal are performed by the base station and one or more network nodes other than the base station (for example,). Mobility Management Entity (MME), Serving-Gateway (S-GW), etc. can be considered, but it is not limited to these), or it is clear that it can be performed by a combination thereof.

Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched with execution. Further, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present disclosure may be changed as long as there is no contradiction. For example, the methods described in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.

Each aspect / embodiment described in the present disclosure includes Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system ( 4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, integer, fraction)), 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) , LTE 802.11 (Wi-Fi®), LTE 802.16 (WiMAX®), LTE 802.20, Ultra-WideBand (UWB), Bluetooth®, and other suitable radios. It may be applied to a system using a communication method, a next-generation system extended based on these, and the like. In addition, a plurality of systems may be applied in combination (for example, a combination of LTE or LTE-A and 5G).

The phrase "based on" as used in this disclosure does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".

Any reference to elements using designations such as "first" and "second" as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted or that the first element must somehow precede the second element.

The term "determining" used in this disclosure may include a wide variety of actions. For example, "judgment (decision)" means judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry) ( For example, searching in a table, database or another data structure), ascertaining, etc. may be considered to be "judgment".

In addition, "judgment (decision)" includes receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access (for example). It may be regarded as "judgment (decision)" such as "accessing" (for example, accessing data in memory).

In addition, "judgment (decision)" is regarded as "judgment (decision)" of solving, selecting, selecting, establishing, comparing, and the like. May be good. That is, "judgment (decision)" may be regarded as "judgment (decision)" of some action.

In addition, "judgment (decision)" may be read as "assuming", "expecting", "considering", and the like.

The "maximum transmission power" described in the present disclosure may mean the maximum value of the transmission power, may mean the nominal UE maximum transmit power, or may mean the rated maximum transmission power (the). It may mean rated UE maximum transmit power).

The terms "connected", "coupled", or any variation thereof, as used herein, are any direct or indirect connection or connection between two or more elements. Means, and can include the presence of one or more intermediate elements between two elements that are "connected" or "joined" to each other. The connection or connection between the elements may be physical, logical, or a combination thereof. For example, "connection" may be read as "access".

In the present disclosure, when two elements are connected, using one or more wires, cables, printed electrical connections, etc., and as some non-limiting and non-comprehensive examples, the radio frequency domain, microwaves. It can be considered to be "connected" or "coupled" to each other using frequency, electromagnetic energy having wavelengths in the light (both visible and invisible) regions, and the like.

In the present disclosure, the term "A and B are different" may mean "A and B are different from each other". The term may mean that "A and B are different from C". Terms such as "separate" and "combined" may be interpreted in the same way as "different".

When "include", "including" and variations thereof are used in the present disclosure, these terms are as comprehensive as the term "comprising". Is intended. Furthermore, the term "or" used in the present disclosure is intended not to be an exclusive OR.

In the present disclosure, if articles are added by translation, for example, a, an and the in English, the disclosure may include that the nouns following these articles are plural.

Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented as an amended or modified mode without departing from the spirit and scope of the invention determined based on the description of the claims. Therefore, the description of the present disclosure is for purposes of illustration and does not bring any limiting meaning to the invention according to the present disclosure.

Claims (6)

1. A transmitter that sends a report on activation or deactivation to the panel,
   It has a control unit that controls at least one of the resending of the report and the activation or deactivation of the panel based on whether or not the approval information is received for the report and at least one of the contents of the approval information. A terminal characterized by that.
2. According to claim 1, the control unit controls to retransmit the report when the approval information cannot be received by the expiration of the first timer started based on the transmission of the report. Described terminal.
3. When the content of the approval information for the report is negative, the control unit sends the report to the panel during the running of the first timer or the second timer started based on the reception of the approval information. The terminal according to claim 1 or 2, wherein the terminal is controlled so as not to transmit a report having the same content.
4. Any one of claims 1 to 3, wherein the control unit stops the first timer started based on the transmission of the report when the content of the approval information for the report is positive. The terminal described in.
5. The process of sending a report on activation or deactivation to the panel, and
   Having a step of controlling at least one of resending the report and activating or deactivating the panel based on whether or not the approval information has been received for the report and at least one of the contents of the approval information. A wireless communication method characterized by.
6. A receiver that receives reports of activation or deactivation for the panel,
   A transmitter that sends approval information for the report,
   A base station including a control unit that controls reception of the report whose retransmission is controlled based on at least one of the reception / absence of the approval information and the content of the approval information in the terminal.
   
   

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