Method and apparatus for channel state information reporting

Abstract

A method for channel state information (CSI) reporting is disclosed. An example method may include receiving discontinuous reception (DRX) configuration information for configuring a plurality of DRX groups, the plurality of DRX groups including a first DRX group having a first cell configured with CSI reporting resources; determining at least one DRX group in the activation time from the plurality of DRX groups; and on the basis of the DRX configuration information and the activation time, reporting the CSI through the CSI reporting resource on the first cell. Related apparatus and computer readable media are also disclosed.

Description

[0001] This application is a divisional application of the Chinese invention patent application with international application number PCT / CN2020 / 098163, international application date June 24, 2020, entering the Chinese national stage on December 23, 2022, Chinese national application number 202080102401.1, and invention name “Method and device for channel state information reporting”. Technical Field

[0002] Various example embodiments are directed to methods and apparatus for channel state information (CSI) reporting. Background Art

[0003] For example, in a communication system such as a long term evolution (LTE) system or a new radio (NR or 5G) system, a user equipment (UE) may report CSI to a base station (BS, e.g., an eNB in ​​an LTE system or a gNB in ​​an NR system) through a CSI reporting resource. Summary of the invention

[0004] In a first aspect, a method is disclosed. The method may include: receiving discontinuous reception (DRX) configuration information for configuring a plurality of DRX groups, the plurality of DRX groups including a first DRX group having a first cell configured with CSI reporting resources; determining at least one DRX group in an activation time from the plurality of DRX groups; and reporting CSI through the CSI reporting resources on the first cell based on the DRX configuration information and the activation time.

[0005] In some embodiments, the activation time of the first DRX group may include the activation time of the at least one DRX group.

[0006] In some embodiments, CSI for one or more cells in the at least one DRX group may be reported.

[0007] In some embodiments, in the case where the multiple DRX groups may further include a second DRX group having a second cell configured with CSI reporting resources, when the at least one DRX group includes the first DRX group, the CSI for one or more cells in the first DRX group may be reported through the CSI reporting resources on the first cell; and the method may further include: when the at least one DRX group includes the second DRX group, reporting the CSI for one or more cells in the second DRX group through the CSI reporting resources on the second cell.

[0008] In some embodiments, in case the CSI mask is configured, the CSI may be reported if the DRX OnDuration timer for the at least one DRX group is running.

[0009] In some embodiments, the method may further include receiving a configuration for CSI reporting for one or more cells in the plurality of DRX groups, and reporting the CSI for the one or more cells in the plurality of DRX groups according to the configuration.

[0010] In some embodiments, the first DRX group may correspond to a first timing advance group.

[0011] In some embodiments, CSI for one or more cells in the activation time may be reported.

[0012] In some embodiments, CSI for one or more cells being activated may be reported.

[0013] In a second aspect, a method is disclosed. The method may include: sending DRX configuration information for configuring a plurality of DRX groups, the plurality of DRX groups including a first DRX group having a first cell configured with CSI reporting resources; determining at least one DRX group in an activation time from the plurality of DRX groups; and receiving CSI through the CSI reporting resources on the first cell based on the DRX configuration information and the activation time.

[0014] In some embodiments, the activation time of the first DRX group may include the activation time of the at least one DRX group.

[0015] In some embodiments, CSI for one or more cells in the at least one DRX group may be received.

[0016] In some embodiments, in the case where the multiple DRX groups may further include a second DRX group having a second cell configured with CSI reporting resources, when the at least one DRX group includes the first DRX group, CSI for one or more cells in the first DRX group may be received through the CSI reporting resources on the first cell; and the method may further include: when the at least one DRX group includes the second DRX group, receiving CSI for one or more cells in the second DRX group through the CSI reporting resources of the second cell.

[0017] In some embodiments, in case the CSI mask is configured, the CSI may be received if the DRX On-Duration timer for the at least one DRX group is running.

[0018] In some embodiments, the method may further include sending a configuration of CSI reporting for one or more cells in the plurality of DRX groups, and receiving CSI for one or more cells in the plurality of DRX groups according to the configuration.

[0019] In some embodiments, the first DRX group may correspond to a first timing advance group.

[0020] In some embodiments, CSI for one or more cells in the activation time may be received.

[0021] In some embodiments, CSI for one or more cells being activated may be received.

[0022] In a third aspect, an apparatus is disclosed. The apparatus may include at least one processor and at least one memory. The at least one memory may include computer program code, and the at least one memory and the computer program code may be configured to, together with the at least one processor, cause the apparatus to perform: receiving DRX configuration information for configuring multiple DRX groups, the multiple DRX groups including a first DRX group having a first cell configured with CSI reporting resources; determining at least one DRX group in an activation time from the multiple DRX groups; and reporting CSI through the CSI reporting resources on the first cell based on the DRX configuration information and the activation time.

[0023] In some embodiments, the activation time of the first DRX group may include the activation time of the at least one DRX group.

[0024] In some embodiments, CSI for one or more cells in the at least one DRX group may be reported.

[0025] In some embodiments, in a case where the multiple DRX groups may further include a second DRX group within a second cell having CSI reporting resources configured therein, when the at least one DRX group includes the first DRX group, CSI for one or more cells in the first DRX group may be reported through the CSI reporting resources on the first cell; and the at least one memory and the computer program code may be configured to, together with the at least one processor, cause the apparatus to further execute, when the at least one DRX group includes the second DRX group, reporting CSI for one or more cells in the second DRX group through the CSI reporting resources on the second cell.

[0026] In some embodiments, in case the CSI mask is configured, the CSI may be reported if the DRX OnDuration timer for the at least one DRX group is running.

[0027] In some embodiments, the at least one memory and the computer program code may be configured, together with the at least one processor, to cause the apparatus to further execute a configuration for receiving CSI reports for one or more cells in the multiple DRX groups, and reporting CSI for one or more cells in the multiple DRX groups based on the configuration.

[0028] In some embodiments, the first DRX group may correspond to a first timing advance group.

[0029] In some embodiments, CSI for one or more cells in the activation time may be reported.

[0030] In some embodiments, CSI for one or more cells being activated may be reported.

[0031] In a fourth aspect, an apparatus is disclosed. The apparatus may include at least one processor and at least one memory. The at least one memory may include computer program code, and the at least one memory and the computer program code may be configured to, together with the at least one processor, cause the apparatus to execute: sending DRX configuration information for configuring multiple DRX groups, the multiple DRX groups including a first DRX group having a first cell configured with CSI reporting resources; determining at least one DRX group in an activation time from the multiple DRX groups; and receiving CSI through the CSI reporting resources on the first cell based on the DRX configuration information and the activation time.

[0032] In some embodiments, the activation time of the first DRX group may include the activation time of at least one DRX group.

[0033] In some embodiments, CSI for one or more cells in the at least one DRX group may be received.

[0034] In some embodiments, in the case where the multiple DRX groups may further include a second DRX group having a second cell configured with CSI reporting resources, when the at least one DRX group includes the first DRX group, the CSI for one or more cells in the first DRX group may be obtained through the CSI reporting resources on the first cell; and the at least one memory and the computer program code may be configured to, together with the at least one processor, cause the device to further execute, when the at least one DRX group includes the second DRX group, receiving CSI for one or more cells in the second DRX group through the CSI reporting resources of the second cell.

[0035] In some embodiments, in case the CSI mask is configured, the CSI may be received if the DRX On-Duration timer for the at least one DRX group is running.

[0036] In some embodiments, the at least one memory and the computer program code may be configured, together with the at least one processor, to cause the apparatus to further perform: sending a configuration of a CSI report for one or more cells in the multiple DRX groups; and receiving CSI for one or more cells in the multiple DRX groups based on the configuration.

[0037] In some embodiments, the first DRX group may correspond to a first timing advance group.

[0038] In some embodiments, CSI for one or more cells in the activation time may be received.

[0039] In some embodiments, CSI for one or more cells being activated may be received.

[0040] In a fifth aspect, a device is disclosed. The device may include: a device for receiving DRX configuration information for configuring multiple DRX groups, the multiple DRX groups including a first DRX group having a first cell configured with CSI reporting resources; a device for determining at least one DRX group in an activation time from the multiple DRX groups; and a device for reporting CSI through the CSI reporting resources on the first cell based on the DRX configuration information and the activation time.

[0041] In some embodiments, the activation time of the first DRX group may include the activation time of at least one DRX group.

[0042] In some embodiments, CSI for one or more cells in the at least one DRX group may be reported.

[0043] In some embodiments, in a case where the multiple DRX groups may further include a second DRX group having a second cell configured with CSI reporting resources, when the at least one DRX group includes a first DRX group, CSI for one or more cells in the first DRX group may be reported through the CSI reporting resources on the first cell; and when the at least one DRX group includes the second DRX group, the device may further include a device for reporting CSI for one or more cells in the second DRX group through the CSI reporting resources on the second cell.

[0044] In some embodiments, in case the CSI mask is configured, the CSI may be reported if the DRX OnDuration timer for the at least one DRX group is running.

[0045] In some embodiments, the apparatus may further include: a device for receiving a configuration for CSI reporting for one or more cells in the multiple DRX groups; and a device for reporting CSI for one or more cells in the multiple DRX groups according to the configuration.

[0046] In some embodiments, the first DRX group may correspond to a first timing advance group.

[0047] In some embodiments, CSI for one or more cells in the activation time may be reported.

[0048] In some embodiments, CSI for one or more cells being activated may be reported.

[0049] In a sixth aspect, a device is disclosed. The device may include: a device for sending DRX configuration information for configuring multiple DRX groups, the multiple DRX groups including a first DRX group having a first cell configured with CSI reporting resources; a device for determining at least one DRX group in an activation time from the multiple DRX groups; and a device for receiving CSI through the CSI reporting resources on the first cell based on the DRX configuration information and the activation time.

[0050] In some embodiments, the activation time of the first DRX group may include the activation time of at least one DRX group.

[0051] In some embodiments, CSI for one or more cells in the at least one DRX group may be received.

[0052] In some embodiments, in a case where the multiple DRX groups may further include a second DRX group having a second cell configured with CSI reporting resources, when the at least one DRX group includes a first DRX group, the CSI for one or more cells in the first DRX group may be received through the CSI reporting resources on the first cell; and the device may further include a device for receiving CSI for one or more cells in the second DRX group through the CSI reporting resources of the second cell when the at least one DRX group includes the second DRX group.

[0053] In some embodiments, in case the CSI mask is configured, the CSI may be received if the DRX On-Duration timer for the at least one DRX group is running.

[0054] In some embodiments, the apparatus may further include: a device for sending a configuration for CSI reporting of one or more cells in the multiple DRX groups; and a device for receiving CSI of one or more cells in the multiple DRX groups according to the configuration.

[0055] In some embodiments, the first DRX group may correspond to a first timing advance group.

[0056] In some embodiments, CSI for one or more cells in an activation time may be received.

[0057] In some embodiments, CSI for one or more cells being activated may be received.

[0058] In a seventh aspect, a computer-readable medium is disclosed. The computer-readable medium may include program instructions for causing an apparatus to perform the following: receiving DRX configuration information for configuring a plurality of DRX groups, the plurality of DRX groups including a first DRX group having a first cell configured with CSI reporting resources; determining at least one DRX group in an activation time from the plurality of DRX groups; and reporting CSI through the CSI reporting resources on the first cell based on the DRX configuration information and the activation time.

[0059] In some embodiments, the activation time of the first DRX group may include the activation time of at least one DRX group.

[0060] In some embodiments, CSI for one or more cells in the at least one DRX group may be reported.

[0061] In some embodiments, in the case where the multiple DRX groups may further include a second DRX group within a second cell having CSI reporting resources configured therein, when the at least one DRX group includes a first DRX group, CSI for one or more cells in the first DRX group may be reported through the CSI reporting resources on the first cell; and the computer-readable medium may further include program instructions for causing the device to execute: when the at least one DRX group includes a second DRX group, reporting CSI for one or more cells in the second DRX group through the CSI reporting resources in the second DRX group.

[0062] In some embodiments, in case the CSI mask is configured, the CSI may be reported if the DRX OnDuration timer for the at least one DRX group is running.

[0063] In some embodiments, the computer-readable medium may further include program instructions for: causing the device to execute a configuration for receiving CSI reports for one or more cells in the multiple DRX groups; and reporting CSI for one or more cells in the multiple DRX groups based on the configuration.

[0064] In some embodiments, the first DRX group may correspond to a first timing advance group.

[0065] In some embodiments, CSI for one or more cells in the activation time may be reported.

[0066] In some embodiments, CSI for one or more cells being activated may be reported.

[0067] In an eighth aspect, a computer-readable medium is disclosed. The computer-readable medium may include program instructions for causing an apparatus to perform the following: sending DRX configuration information for configuring a plurality of DRX groups, the plurality of DRX groups including a first DRX group having a first cell configured with CSI reporting resources; determining at least one DRX group in an activation time from the plurality of DRX groups; and receiving CSI through the CSI reporting resources on the first cell based on the DRX configuration information and the activation time.

[0068] In some embodiments, the activation time of the first DRX group may include the activation time of at least one DRX group.

[0069] In some embodiments, CSI for one or more cells in the at least one DRX group may be received.

[0070] In some embodiments, in the case where the multiple DRX groups may further include a second DRX group having a second cell configured with CSI reporting resources, when the at least one DRX group includes the first DRX group, the CSI for one or more cells in the first DRX group may be received through the CSI reporting resources on the first cell; and the computer-readable medium may further include program instructions for causing the device to execute: when the at least one DRX group includes the second DRX group, receiving the CSI for one or more cells in the second DRX group through the CSI reporting resources of the second cell.

[0071] In some embodiments, in case the CSI mask is configured, the CSI may be received if the DRX On-Duration timer for the at least one DRX group is running.

[0072] In some embodiments, the computer-readable medium may further include program instructions for: causing the device to execute configuration of sending CSI reports for one or more cells in the multiple DRX groups; and receiving CSI for one or more cells in the multiple DRX groups based on the configuration.

[0073] In some embodiments, the first DRX group may correspond to a first timing advance group.

[0074] In some embodiments, CSI for one or more cells in the activation time may be received.

[0075] In some embodiments, CSI for one or more cells being activated may be received. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] Some example embodiments will now be described by way of non-limiting examples with reference to the accompanying drawings.

[0077] Figure 1 An example of multiple DRX groups is illustrated.

[0078] Figure 2 An example of CSI reporting on a CSI reporting resource is illustrated.

[0079] Figure 3 An example method for CSI reporting in an embodiment is illustrated.

[0080] Figure 4 Another example method for CSI reporting in an embodiment is illustrated.

[0081] Figure 5 Another example of multiple DRX groups is illustrated.

[0082] Figure 6 An example method for CSI reporting in an embodiment is illustrated.

[0083] Figure 7 Another example method for CSI reporting in an embodiment is illustrated.

[0084] Figure 8 An example apparatus for CSI reporting in an embodiment is illustrated.

[0085] Fig. 9 An example apparatus for CSI reporting in an embodiment is illustrated.

[0086] Fig.10 An example device for CSI reporting in an embodiment is illustrated.

[0087] Fig.11 An example device for CSI reporting in an embodiment is illustrated. DETAILED DESCRIPTION

[0088] Multiple DRX groups may be configured to enhance power saving. A cell for a UE may belong to multiple DRX groups, and at least one cell in at least one DRX group may be configured with a CSI reporting resource, wherein a DRX group may be a group of cells having the same activation time. For example, one or more cells associated with a first frequency range (e.g., FR1) may be configured in a first DRX group, and one or more cells associated with a second frequency range (e.g., FR2) may be configured in a second DRX group. Different DRX groups may have separate DRX timers and may have separate activation times. The activation time may include the time when at least one DRX timer is running. DRX timers include a DRX on-duration timer (e.g., drx-onDurationTimer), a DRX inactivity timer (e.g., drx-InactivityTimer), a DRX retransmission timer downlink (e.g., drx-RetransmissionTimerDL), a DRX retransmission timer uplink (e.g., drx-RetransmissionTimerUL), a ra-contention resolution timer (ra-ContentionResolutionTimer), etc., as described in the technical standard (TS) of the 3rd Generation Partnership Project (3GPP) (e.g., 3GPP TS 38.321).

[0089] The DRX cycle includes: the DRX activation time (i.e., the on-duration) during which the UE monitors the physical downlink control channel (PDCCH) or downlink control information (DCI), and the DRX period (i.e., the off-duration) during which the UE can skip the reception of downlink channels to save battery. The duration timer indicates the duration of the on-time within a DRX cycle, and the DRX inactivity timer specifies how long the UE should remain in the "on state" (in the activation time) after receiving the PDCCH. When this timer is turned on, the UE remains in the "on state", which can extend the UE's activation time to another period in the off-duration. The DRX retransmission timer indicates the maximum number of consecutive PDCCH subframes that the UE should remain active after the first available retransmission time to wait for incoming retransmissions (or send retransmissions). The DRX cycle includes a short DRX cycle and a long DRX cycle. The short DRX cycle can be implemented within the DRX cycle (off-duration) of the long DRX cycle. The DRX short cycle timer indicates the number of consecutive subframes that the UE will follow the short DRX cycle after the DRX inactivity timer expires.

[0090] Figure 1 An example of multiple DRX groups is shown. Figure 1 In the embodiment, for example, a primary DRX group (i.e., P-DRX) associated with a first frequency FR1 and a secondary DRX group (i.e., S-DRX) associated with a second frequency FR2 are shown as examples of multiple DRX groups. drx-onDurationTimer1 and drx-InactivityTimer1 are shown as examples of DRX timers for P-DRX, and drx-onDurationTimer2 and drx-InactivityTimer2 are shown as examples of DRX timers for S-DRX. drx-onDurationTimer1 and drx-onDurationTimer2 may be, for example, the above-mentioned drx-onDurationTimer, and drx-InactivityTimer1 and drx-InactivityTimer2 may be, for example, the above-mentioned drx-InactivityTimer. In other embodiments, P-DRX may be associated with FR2, and S-DRX may be associated with FR1, or P-DRX and S-DRX may be associated with the same FR (e.g., FR1 or FR2).

[0091] like Figure 1As shown, for example, the PDCCH for one or more cells (e.g., one or more serving cells or one or more activated cells) in P-DRX can be monitored by the UE during the activation time of P-DRX, such as when drx-onDurationTimer1 (and / or drx-InactivityTimer1) is running, and the UE can stop monitoring the PDCCH outside the activation time of P-DRX to save power. Similarly, in Figure 1 In the present invention, the PDCCH for one or more cells (e.g., one or more serving cells or one or more cells being activated) in S-DRX can be monitored by the UE during the activation time of S-DRX, for example, when drx-onDurationTimer2 (and / or drx-InactivityTimer2) is running, and the UE can stop monitoring the PDCCH outside the activation time of S-DRX to save power.

[0092] Figure 2 is an example of a CSI report resource. Figure 2 In the figure, P-DRX and S-DRX are shown as examples of multiple DRX groups, Cell1 and Cell2 are shown as examples of cells in P-DRX, and Cell3 and Cell4 are shown as examples of cells in S-DRX. In P-DRX, at least one cell may be configured with CSI reporting resources, and at least one cell with CSI reporting resources may be a primary cell (PCell) or a primary secondary cell (PSCell). In addition, in S-DRX, cells such as secondary cells (SCells) may also be configured with CSI reporting resources, and in this case, the SCell may be a PUCCH SCell. If no cell in S-DRX is configured with CSI reporting resources, the CSI for one or more cells in S-DRX may be reported through the CSI reporting resources on the PCell. Figure 2 In the figure, PUCCH is shown as an example of a CSI reporting resource for a UE to report CSI, and it can be understood that the CSI reporting resource may also include a physical uplink shared channel (PUSCH) and / or other radio resources.

[0093] Further, for example, one or more long DRX cycles and one or more short DRX cycles that can be associated with drx-ShortCycleTimer can be configured for multiple DRX groups. For example, the lengths of the long DRX cycle and the short DRX cycle can be configured to be common to the above-mentioned FR1 associated with P-DRX and the above-mentioned FR2 associated with S-DRX. Therefore, for example, in the case of configuring multiple DRX groups and long / short DRX cycles, different activity modes can exist on the frequency of P-DRX and the frequency of S-DRX. For example, a cell in S-DRX may still follow the short DRX cycle, while a cell in P-DRX has fallen back to the long DRX cycle.

[0094] Figure 3 An example method 300 for CSI reporting in an embodiment is illustrated, which may be performed in an apparatus such as a UE or at least a portion of a UE.

[0095] like Figure 3As shown, the example method 300 may include a step 310 of receiving DRX configuration information for configuring a plurality of DRX groups. For example, in step 310, the DRX configuration information may be included in a higher layer message (e.g., a medium access control (MAC) message or a radio resource control (RRC) message). The plurality of DRX groups may include a first DRX group having a first cell configured with a CSI reporting resource. In addition, the example method 300 may include a step 320 of determining at least one DRX group in an activation time from the plurality of DRX groups, and a step 330 of reporting CSI through the CSI reporting resource based on the DRX configuration information and the activation time. For example, if at least one DRX group in the activation time determined in step 320 includes a first DRX group, then CSI for one or more cells in the first DRX group (e.g., one or more serving cells, or one or more cells being activated) may be reported in step 330 through the CSI reporting resources of the first cell; if at least one DRX group in the activation time determined in step 320 includes a second DRX different from the first DRX, then CSI for one or more cells in the second DRX group (e.g., one or more serving cells, or one or more cells being activated) may be reported in step 330 through the CSI reporting resources of the first cell, even if at least one group in the activation time does not include the first DRX group having a first cell providing CSI reporting resources. If the serving cell of the S-DRX for which the CSI report is intended is during the activation time, the CSI is reported via the first cell even if the CSI reporting resources (opportunities) are not at the activation time. In another embodiment, if the plurality of DRX groups further include another DRX group having a second cell providing CSI reporting resources for the DRX group in addition to the first cell in the first DRX group, then according to the DRX configuration information and at least one DRX group in the activation time determined in step 320, in step 330, for example, the CSI reporting resources of the first cell may be used to report CSI for one or more cells (e.g., one or more serving cells, or one or more cells being activated) in the first DRX group when the first DRX group belongs to at least one DRX group in the activation time, or may be used to report CSI for one or more cells (e.g., one or more serving cells, or one or more cells being activated) in another DRX group that is different from the first DRX group but belongs to at least one DRX group in the activation time (even if the at least one DRX group in the activation time does not include the first DRX group), etc. More examples and details will be given below.

[0096] Combination Figure 1 or Figure 2In the example in step 310, it can be determined that multiple DRX groups are configured and the cell in P-DRX (e.g., PCell in P-DRX) is configured to provide CSI reporting resources, such as PUCCH or PUSCH. For example, in the case where S-DRX is not configured with CSI reporting resources, CSI for one or more cells in at least one of P-DRX and S-DRX (e.g., one or more serving cells, or one or more cells being activated) can be reported through the CSI reporting resources of the cell of P-DRX. The first cell can be, for example, a PCell or a PScell.

[0097] In step 320, one or more DRX groups in the activation time may be determined. If at least one DRX group is in the activation time, then in step 330, the UE reports CSI via the CSI reporting resource on the first cell. The CSI may be measured, for example, in step 320 in any suitable manner.

[0098] For example, when the P-DRX including the first cell is not at the activation time and the S-DRX is at the activation time, the CSI for one or more cells in the S-DRX (e.g., one or more serving cells, or one or more cells being activated) may be reported via the CSI reporting resources on the first cell. For example, the CSI report on the cell may be independent of the activation time of the cell for which the CSI is reported on its CSI reporting resources, and may be dependent on the activation time of the cell for which the CSI is reported. Therefore, if the cell for which the CSI is reported is at the activation time, the CSI is reported for the cell regardless of whether the cell for which the CSI is reported on its CSI reporting resources is at the activation time. In other words, even if the P-DRX group is in the DRX cycle (i.e., the off duration), when the S-DRX group is at the activation time, the UE is able to report the CSI of the cells of the S-DRX group to the gNB via the CSI reporting resources configured in the P-DRX group. In this case, the CSI reporting resources have been configured by the gNB as a conventional method (e.g., a CSI configuration information element (IE) in an RRC message).

[0099] When both P-DRX and S-DRX are in the activation time, the CSI for one or more cells in P-DRX (e.g., one or more serving cells, or one or more cells being activated) and one or more cells in S-DRX (e.g., one or more serving cells, or one or more cells being activated) can be reported through the CSI reporting resources on the first cell.

[0100] If both P-DRX and S-DRX are not in the activation time, CSI may not be reported.

[0101] Therefore, PDCCH monitoring can be independent of the two DRX groups, but CSI reporting can depend on the activation time of the two DRX groups, so that for the DRX group configured with CSI reporting resources, the UE may not monitor PDCCH regardless of whether CSI reporting is performed. Therefore, the power consumption of the device can be reduced.

[0102] In one embodiment, the activation time of the first DRX group (or P-DRX) may include the activation time of at least one DRX group. The DRX group takes the above-mentioned P-DRX and S-DRX as examples. If S-DRX is in the activation time, then P-DRX may also be in the activation time.

[0103] For example, when P-DRX is at the activation time and S-DRX is not at the activation time, the CSI of one or more cells in P-DRX (e.g., one or more serving cells, or one or more cells being activated) can be reported through the CSI reporting resources on the first cell. In addition, when S-DRX is at the activation time, the CSI of one or more cells in both P-DRX and S-DRX (e.g., one or more serving cells, or one or more cells being activated) can be reported through the CSI reporting resources on the first cell.

[0104] In this embodiment, for example, the drx-ShortCycleTimer (e.g., as provided in 3GPP TS38.321) for the DRX group configured with CSI reporting resources may be unaffected, and the DRX group may maintain the short cycle when another DRX group is using the short cycle, or if at least one DRX group for which CSI is being reported is using the short cycle, then the CSI reporting is based on the short cycle.

[0105] In one embodiment, CSI of one or more cells (e.g., one or more serving cells, or one or more cells being activated) in at least one DRX group in the activation time may be reported in step 330. Taking the above-mentioned P-DRX and S-DRX as an example, the UE may report the CSI of the serving cell of the DRX group in the activation time through the CSI reporting resource.

[0106] For example, if P-DRX is not in the activation time and S-DRX is in the activation time, the UE may report the CSI for the serving cell (or one or more cells being activated) in S-DRX in the activation time through the CSI reporting resources on the first cell of P-DRX, and may not report the CSI for other cells. If S-DRX is not in the activation time and P-DRX is in the activation time, the UE may report the CSI for the serving cell (or one or more cells being activated) in P-DRX in the activation time through the CSI reporting resources on the first cell of P-DRX, and may not report the CSI of other cells. If P-DRX is not in the activation time, the CSI of the serving cell in P-DRX may not be reported, and if S-DRX is not in the activation time, the CSI of the serving cell in S-DRX may not be reported.

[0107] In this embodiment, the UE can report CSI of fewer cells and can use fewer CSI resources. The separate CSI reporting resources of the serving cells in the P-DRX group and the serving cells in the S-DRX group can be configured by the network entity. Power consumption can therefore be reduced.

[0108] In one embodiment, the multiple DRX groups may further include a second DRX group having a second cell configured with CSI reporting resources. In this case, step 330 may include: when at least one DRX group includes the first DRX group, reporting CSI for one or more cells in the first DRX group through the CSI reporting resources on the first cell, and the example method 300 may further include: when at least one DRX group includes the second DRX group, reporting CSI for one or more cells in the second DRX group through the CSI reporting resources on the second cell. Therefore, the CSI of one or more cells in the DRX group can be reported through the CSI reporting resources on the cells within its own group, so that the CSI report for the DRX group can be independent of the CSI report for another DRX group, and when the corresponding DRX group is in the activation time, the CSI for different DRX groups can be reported.

[0109] Figure 4An example method 400 for CSI reporting in an embodiment is shown, which may include the steps of the example method 300 and additional steps 410 and 420. The DRX group takes the above-mentioned P-DRX and S-DRX as examples. In step 410, it may be determined whether the multiple DRX groups also include a second DRX group having a second cell configured with CSI reporting resources. If there is no such second cell (the "N" branch in step 410), then step 330 may include reporting CSI for one or more cells (e.g., one or more serving cells, or one or more cells being activated) in at least one DRX group through the CSI reporting resources on the first cell. If the second cell of the second DRX group is configured with CSI reporting resources ("Y" branch in step 410), then step 330 may include: when at least one DRX group includes the first DRX group, reporting the CSI for one or more cells in the first DRX group through the CSI reporting resources on the first cell, and in step 420, when at least one DRX group in the activation time includes the second DRX group, the CSI of one or more cells in the second DRX group may be reported through the CSI reporting resources on the second cell.

[0110] For example, if the cells of the first DRX group (e.g., P-DRX) are configured with CSI reporting resources such as PUCCH and / or PUSCH resources, and the cells of the second DRX group (e.g., S-DRX) are configured with CSI reporting resources such as PUCCH and / or PUSCH resources, then the CSI reporting of P-DRX and S-DRX can work independently based on the activation time of P-DRX and S-DRX, respectively. If the second DRX group is not configured with CSI reporting resources (the "N" branch in step 410), then step 330 may include CSI reporting for P-DRX, and S-DRX can be on the same CSI reporting resources on the cell of P-DRX. It should be understood that the steps of method 400 are not limited to Figure 4 For example, step 410 may also be performed before step 320.

[0111] For example, the CSI of one or more cells in P-DRX may be reported through CSI reporting resources on a first cell (e.g., PCell), and / or the CSI of one or more cells in S-DRX may be reported through CSI reporting resources on a second cell (e.g., PUCCH SCell). For example, when P-DRX is not at an activation time and the CSI reporting resources do not include CSI reporting for a serving cell in S-DRX, CSI may not be reported.

[0112] In one embodiment, with the CSI mask configured, CSI may be reported if the DRX OnDuration timer for at least one DRX group is running. Figure 5 Another example of multiple DRX groups is shown. Figure 5 As shown, for example, P-DRX can be in a long DRX cycle and S-DRX can be in a short DRX cycle. For example, in the case where the CSI mask is configured, when drx-onDurationTimer2 is running and drx-onDurationTimer1 is not running, if drx-onDurationTimer2 is running, then CSI can be reported through the CSI reporting resource.

[0113] For example, in the case where S-DRX is not configured with CSI reporting resources and a CSI mask is configured, if the drx-onDurationTimer2 of S-DRX is running, then the CSI for one or more cells in S-DRX (e.g., the serving cell or the cell being activated) can be reported through the CSI reporting resources on the first cell of P-DRX. The CSI reporting resources have been configured by higher-layer signaling (e.g., MAC or RRC message), and the CSI reporting resources are restricted within the DRX cycle (i.e., the off duration), which may result in the UE being unable to report when it is not in the activation time. However, the UE of this embodiment is configured to report the CSI in the CSI reporting resources during the DRX cycle if the cells of another DRX group that is the subject of the CSI report are in the activation time. The CSI report is for the cells that are in the activation time, so the UE is measuring these cells anyway. Figure 5 In the example shown, when drx-onDurationTimer1 is running, CSI of one or more cells in P-DRX may be reported, and when drx-onDurationTimer2 is running, CSI of one or more cells in S-DRX may be reported. In addition, for example, when drx-onDurationTimer1 is not running and drx-onDurationTimer2 is running, CSI of one or more cells in S-DRX may be reported through CSI reporting resources on the first cell of P-DRX. In addition, for example, when drx-onDurationTimer2 is not running, CSI of one or more cells in S-DRX may not be reported.

[0114] In this example embodiment, when the drx-onDurationTimer of the DRX group with cells configured with CSI reporting resources is not running, such as in long DRX and when CSI-mask is configured, CSI of the DRX group without CSI reporting resources may be reported. For example, in the case where the CSI mask (CSI-mask) is set by the upper layer but the DRX group does not run the drx-onDurationTimer, the CSI for the DRX group may not be reported.

[0115] In one embodiment, the example method may further include: receiving a configuration (e.g., an RRC configuration) regarding CSI reporting for one or more cells in a plurality of DRX groups, and reporting CSI for one or more cells in the plurality of DRX groups according to the configuration. For example, the UE may report CSI for a serving cell in an activation time or for a serving cell according to, for example, an RRC configuration, and regardless of the activation time in a given DRX group.

[0116] In one embodiment, the first DRX group may correspond to the first timing advance group. A timing advance group (TAG) may be configured to correspond to a DRX group. For example, a primary TAG (PTAG) may be configured for a cell associated with P-DRX, and a secondary TAG (STAG) may be configured for a cell associated with S-DRX.

[0117] In various embodiments, CSI of one or more cells in the activation time is reported. For example, CSI of one or more cells in the activation time may be reported, and CSI of one or more cells not in the activation time may not be reported.

[0118] In various embodiments, CSI of one or more cells being activated is reported. For example, CSI for one or more cells being activated may be reported, and CSI for one or more cells not being activated may not be reported.

[0119] Figure 6 An example method 600 for a CSI reporting procedure in an embodiment is illustrated, which may be performed in an apparatus such as a BS or at least a portion of a BS to cooperate with the example method 300 or 400 .

[0120] like Figure 6As shown, the example method 600 may include a step 610 of sending DRX configuration information for configuring a plurality of DRX groups. The DRX configuration information may be included in a higher layer message (e.g., a MAC or RRC message). The plurality of DRX groups include a first DRX group having a first cell configured with CSI reporting resources. The example method 600 may include a step 620 of determining at least one DRX group in an activation time from the plurality of DRX groups and a step 630 of receiving CSI through the CSI reporting resources on the first cell based on the DRX configuration information and the activation time.

[0121] Example method 600 may be performed, for example, to cooperate with example method 300 or 400. Thus, various features and aspects described above with respect to example method 300 or 400 may also be applied to or included in or combined with example method 600.

[0122] For example, in the example method 600, the activation time of the first DRX group may include the activation time of at least one DRX group.

[0123] For example, in the example method 600, CSI of one or more cells in at least one DRX group may be received.

[0124] For example, in example method 600, in a case where multiple DRX groups may further include a second DRX group having a second cell configured with CSI reporting resources, when at least one DRX group includes a first DRX group, CSI for one or more cells in the first DRX group may be received via the CSI reporting resources on the first cell, and method 600 may further include that when at least one DRX group includes a second DRX group, CSI for one or more cells in the second DRX group may be received via the CSI reporting resources of the second DRX group.

[0125] For example, in the example method 600, in case the CSI mask is configured, if the DRX OnDuration timer for at least one DRX group is running, then CSI may be received.

[0126] In some embodiments, the method 600 may further include sending a configuration of CSI reporting for one or more cells in the plurality of DRX groups, and receiving CSI for the one or more cells in the plurality of DRX groups according to the configuration.

[0127] For example, in the example method 600, the first DRX group may correspond to the first timing advance group.

[0128] For example, in the example method 600, CSI of one or more cells in an activation time may be received.

[0129] For example, in example method 600, CSI for one or more cells being activated may be received.

[0130] In the above exemplary embodiment, two DRX groups P-DRX and S-DRX may be taken as an example, and it can be understood that the exemplary embodiment may work in the case where more DRX groups are configured. When multiple DRX groups are configured, the availability of the UE reporting CSI information to the BS may be guaranteed. It should be understood that UE may refer to an apparatus such as a UE or at least a part of a UE, and BS may refer to an apparatus such as a BS or at least a part of a BS.

[0131] Figure 7 Another example method of CSI reporting in an embodiment is illustrated.

[0132] The gNB configures two or more DRX groups (710) for one or more UEs covered by the gNB.

[0133] The gNB sends a higher layer message (e.g., RRC) including a DRX configuration information (also referred to herein as DRX-Config) element for configuring two or more DRX groups to the UE (720). The DRX configuration information element includes at least one of a drx-onDurationTimer, a drx-InactivityTimer, a DRX retransmission timer downlink (i.e., drx-RetransmissionTimerDL), a DRX retransmission timer uplink (i.e., drx-RetransmissionTimerUL), a ra-ContentionResolutionTimer, a drx-LongCycleStartOffset, or a drx-ShortCycle parameter for a first DRX group and a second DRX group.

[0134] The UE's media access control (MAC) entity may be configured via an RRC message with a DRX function that controls the UE's PDCCH monitoring activity for the MAC entity. When using DRX operation, the UE's MAC entity shall also monitor the PDCCH according to the above embodiments. When the UE is in the RRC_CONNECTED state and if DRX is configured for an activated serving cell, the UE's MAC entity may use the above embodiments and Figures 1 to 6 One of the explained DRX operations is to discontinuously monitor the search space (730) for decoding the PDCCH.

[0135] In an activation time of a configured DRX cycle, the UE may decode at least one DCI that has been transmitted via a PDCCH in at least one of the two or more DRX groups (740).

[0136] When the DRX cycles of two or more DRX groups are configured, if the DRX group is configured with PUSCH and / or PUCCH resources for CSI reporting of any serving cell in another DRX group, the activation time of the DRX group (e.g., the first DRX group) includes the time when the other DRX group (e.g., the second DRX group) is in the activation time. Therefore, the UE performs CSI reporting based on the configured activation times of the two or more DRX groups (750).

[0137] Step 750 may be performed based on the above embodiment, for example Figures 1 to 6 The explained embodiment.

[0138] As another embodiment, when two or more DRX groups are configured and if one DRX group includes PUCCH and / or PUSCH resources for CSI reporting, when the two or more DRX groups are not in the activation time, the MAC entity of the UE does not report CSI on the PUCCH and does not report the configured semi-persistent CSI on the PUSCH for the serving cells in the DRX group.

[0139] As another embodiment, when two or more DRX groups are configured and if one DRX group includes PUCCH and / or PUSCH resources for CSI reporting, in the case where CSI reporting resources used for CSI reporting of a serving cell in another DRX group of the two or more DRX groups do not include CSI reporting, the MAC entity of the UE does not report CSI on PUCCH in any DRX group and does not report the configured semi-persistent CSI on PUSCH.

[0140] As another embodiment, in the current symbol n, if, when evaluating all DRX activation time conditions, the other DRX group will not be in the activation time taking into account the grant / allocation scheduled for the serving cell in another DRX group 4 ms before symbol n, the received DRX command MAC CE / long DRX command MAC CE and the sent scheduling request, then the UE does not report CSI on the PUCCH in any DRX group and does not report the configured semi-persistent CSI on the PUSCH.

[0141] As another embodiment, if the CSI mask (csi-Mask) is set by upper layers, when evaluating all configured DRX activation time conditions, if the drx-onDurationTimer will not run in any DRX group taking into account the grant / allocation scheduled for the serving cell in any DRX group before 4 ms before codeword n, and the received DRX command MAC CE / long DRX command MAC CE, then the UE does not report CSI on the PUCCH in the current codeword n.

[0142] It should be understood that although the above examples are described in the context of an NR system, the method may be applied to other communication systems such as an LTE system.

[0143] Figure 8 An example apparatus 800 for a CSI reporting process in an embodiment is illustrated, which may be, for example, the UE in the above example.

[0144] like Figure 8 As shown, the example apparatus 800 may include at least one processor 810 and at least one memory 820, and the memory 820 may include computer program code 830. The at least one memory 820 and the computer program code 830 may be configured to, together with the at least one processor 810, enable the apparatus 800 to perform at least one of the above-mentioned example methods 300 and / or the example methods 400.

[0145] In various example embodiments, at least one processor 810 in the example apparatus 800 may include, but is not limited to, at least one hardware processor, including at least one microprocessor such as a central processing unit (CPU), a portion of at least one hardware processor, and any other suitable dedicated processor such as those developed based on, for example, a field programmable gate array (FPGA) and an application specific integrated circuit (ASIC). In addition, the at least one processor 810 may also include Figure 8 At least one other circuit or element not shown.

[0146] In various example embodiments, at least one memory 820 in the example apparatus 800 may include various forms of at least one storage medium such as volatile memory and / or non-volatile memory. Volatile memory may include, but is not limited to, for example, random access memory (RAM), cache, etc. Non-volatile memory may include, but is not limited to, for example, read-only memory (ROM), hard disk, flash memory, etc. In addition, at least memory 820 may include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any combination of the above.

[0147] Furthermore, in various example embodiments, the exemplary apparatus 800 may further include at least one other circuit, element, and interface, such as at least one I / O interface, at least one antenna element, and the like.

[0148] In various example embodiments, the circuits, components, elements, and interfaces in the example device 800 including at least one processor 810 and at least one memory 820 may be coupled together in any suitable manner (e.g., electrically, magnetically, optically, electromagnetically, etc.) via any suitable connection (including, but not limited to, buses, switch structures (crossbars), wiring, and / or wireless lines).

[0149] It can be understood that the structure of the device on the UE side is not limited to the above-mentioned example device 800.

[0150] Fig. 9 An example apparatus 900 for a CSI reporting process in an embodiment is illustrated, which may be, for example, the BS in the above example.

[0151] like Fig. 9 As shown, the example apparatus 900 may include at least one processor 910 and at least one memory 920 that may include computer program code 930. The at least one memory 920 and the computer program code 930 may be configured to, together with the at least one processor 910, cause the apparatus 900 to at least perform at least one of the above-described example methods 600.

[0152] In various example embodiments, at least one processor 910 in the example apparatus 900 may include, but is not limited to, at least one hardware processor, including at least one microprocessor such as a central processing unit (CPU), a portion of at least one hardware processor, and any other suitable dedicated processor such as those developed based on, for example, a field programmable gate array (FPGA) and an application specific integrated circuit (ASIC). In addition, the at least one processor 910 may also include Fig. 9 At least one other circuit or element not shown.

[0153] In various example embodiments, at least one memory 920 in the example device 900 may include various forms of at least one storage medium such as volatile memory and / or non-volatile memory. Volatile memory may include, but is not limited to, for example, random access memory (RAM), cache, etc. Non-volatile memory may include, but is not limited to, for example, read-only memory (ROM), hard disk, flash memory, etc. In addition, at least memory 920 may include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any combination of the above.

[0154] Furthermore, in various example embodiments, the exemplary device 900 may further include at least one other circuit, element, and interface, such as at least one I / O interface, at least one antenna element, and the like.

[0155] In various example embodiments, the circuits, components, elements, and interfaces in the example device 900 including at least one processor 910 and at least one memory 920 may be coupled together in any suitable manner (e.g., electrically, magnetically, optically, electromagnetically, etc.) via any suitable connection (including, but not limited to, buses, switching structures, wiring, and / or wireless lines).

[0156] It can be understood that the structure of the base station side device is not limited to the above-mentioned example device 900.

[0157] Fig.10 An example device 1000 for a CSI reporting process in an embodiment is illustrated, which may be, for example, the UE in the above example.

[0158] like Fig.10 As shown, the example device 1000 may include: a device 1010 for performing step 310 of the example method 300, a device 1020 for performing step 320 of the example method 300, and a device 1030 for performing step 330 of the example method 300. In one or more other example embodiments, at least one I / O interface, at least one antenna element, etc. may also be included in the example device 1000.

[0159] In some example embodiments, examples of means in example device 1000 may include circuitry. For example, examples of means 1010 may include circuitry configured to perform step 310 of example method 300, examples of means 1020 may include circuitry configured to perform step 320 of example method 300, and examples of means 1030 may include circuitry configured to perform step 330 of example method 300. In some example embodiments, examples of means may also include software modules and any other suitable functional entities.

[0160] The term "circuitry" throughout this application may refer to one or more or all of the following: (a) a hardware-only implementation of a circuit (such as an implementation in analog and / or digital circuits only); (b) a combination of hardware circuitry and software, such as (where applicable); (i) a combination of analog and / or digital hardware circuitry and software / firmware; and (ii) a hardware processor and any portion of software (including a digital signal processor), software, and memory that work together to enable a device such as a mobile phone or server to perform various functions); and (c) a hardware circuit and / or processor that requires software (e.g., firmware) to operate, such as a microprocessor or a portion of a microprocessor, but the software may not be present when not required to operate. This definition of circuitry applies to one or all uses of the term in this application (including in any claims). As a further example, as used in this application, the term "circuitry" also covers an implementation of a hardware circuit or processor (or multiple processors) or a portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. For example, and where applicable to a claim element, the term circuitry also covers a baseband integrated circuit or a processor integrated circuit for a mobile device, or a similar integrated circuit in a server, cellular network device, or other computing or networking device.

[0161] Fig.11 An example device 1100 for a CSI reporting process in an embodiment is illustrated, which may be, for example, the BS in the above example.

[0162] like Fig.11 As shown, the example device 1100 may include: a device 1110 for performing step 610 of the example method 600, a device 1120 for performing step 620 of the example method 600, and a device 1130 for performing step 630 of the example method 600. In one or more other example embodiments, at least one I / O interface, at least one antenna element, etc. may also be included in the example device 1100.

[0163] In some example embodiments, the examples of means in example device 1110 may include circuitry. For example, the examples of means 1110 may include circuitry configured to perform step 610 of example method 600, the examples of means 1120 may include circuitry configured to perform step 620 of example method 600, and the examples of means 1130 may include circuitry configured to perform step 630 of example method 600. In some example embodiments, the examples of means may also include software modules and any other suitable functional entities.

[0164] In all drawings, the same or similar reference numerals denote the same or similar elements, and repeated description of the same elements will be omitted.

[0165] Another example embodiment may be associated with a computer readable medium having such computer program code or instructions stored thereon. In various embodiments, such computer readable medium may include at least one storage medium in various forms such as volatile memory and / or non-volatile memory. Volatile memory may include, but is not limited to, for example, RAM, cache, etc. Non-volatile memory may also include, but is not limited to, ROM, hard disk, flash memory, etc.

[0166] Unless the context clearly requires otherwise, throughout the specification and claims, the words "include", "comprises", etc. should be interpreted in an inclusive sense, rather than exclusive or exhaustive; that is, in the sense of "including but not limited to". As generally used herein, the term "coupled" refers to two or more elements that can be directly connected, or connected through one or more intermediate elements. Similarly, as generally used herein, the term "connected" refers to two or more elements that can be directly connected or connected through one or more intermediate elements. In addition, when used in this application, the words "herein", "above", "below" and words of similar meanings should refer to the application as a whole, rather than to any particular part of the application. Where the context permits, words used in the description in the singular or plural may also include the plural or singular, respectively. The word "or" refers to a list of two or more items, and the word covers all the following interpretations of the word: all items in the list, any item in the list, and any combination of items in the list.

[0167] Furthermore, conditional language used herein, such as "may," "could," "might," "can," "for example," "example," "such as," and the like, unless otherwise specifically stated or otherwise understood in the context of use, is generally intended to convey that some embodiments include and other embodiments do not include certain features, elements, and / or states. Thus, such conditional language is generally not intended to indicate that features, elements, and / or states are in any way required for one or more embodiments, or that one or more embodiments necessarily include logic for determining that such features, elements, and / or states are included or to be performed in any particular example embodiment, with or without author input or prompting.

[0168] Although some example embodiments have been described, these embodiments have been given by way of example and are not intended to limit the scope of the present disclosure. In fact, the apparatus (equipment), method and system described herein can be embodied in a variety of other forms. In addition, without departing from the spirit of the present disclosure, various omissions, replacements and changes can be made to the form of the methods and systems described herein. For example, although the frame is presented in a given arrangement, an alternative embodiment can perform similar functions with different components and / or circuit topologies, and some frames can be deleted, moved, added, subdivided, combined and / or modified. At least one of these frames can be implemented in various different ways. The order of these frames can also be changed. Any appropriate combination of the elements and actions of the various embodiments described above can be combined to provide other embodiments. The attached claims and their equivalents are intended to cover these forms or modifications that will fall within the scope and spirit of the application.

Claims

1. A method comprising: receiving discontinuous reception (DRX) configuration information for configuring a plurality of DRX groups, the plurality of DRX groups including a first DRX group having a first cell configured with channel state information (CSI) reporting resources; determining at least one DRX group in an activation time from the plurality of DRX groups; as well as Based on the DRX configuration information and the activation time, CSI is reported through the CSI reporting resource on the first cell.

2. The method of claim 1, wherein: The activation time of the first DRX group includes the activation time of at least one DRX group.

3. The method according to claim 1 or 2, wherein: Reporting CSI for one or more cells in the at least one DRX group.

4. The method according to any one of claims 1 to 3, wherein: In a case where the plurality of DRX groups further include a second DRX group having a second cell configured with CSI reporting resources, when the at least one DRX group includes a first DRX group, reporting CSI for one or more cells in the first DRX group through the CSI reporting resources on the first cell, and the method further includes: When the at least one DRX group includes a second DRX group, CSI for one or more cells in the second DRX group is reported through a CSI reporting resource on the second cell.

5. The method according to any one of claims 1 to 4, wherein: In case the CSI mask is configured, if the DRX OnDuration timer for the at least one DRX group is running, the CSI is reported.

6. The method according to any one of claims 1 to 5, wherein: The first DRX group corresponds to a first timing advance group.

7. The method according to any one of claims 1 to 6, wherein: Report CSI for one or more cells in the activation time.

8. The method according to any one of claims 1 to 7, wherein: The CSI for the cell or cells being activated is reported.

9. A method comprising: sending discontinuous reception (DRX) configuration information for configuring a plurality of DRX groups, the plurality of DRX groups including a first DRX group having a first cell configured with a channel state information (CSI) reporting resource; Determine at least one DRX group in the activation time from the plurality of DRX groups; as well as Based on the DRX configuration information and the activation time, CSI is received through the CSI reporting resource on the first cell.

10. The method of claim 9, wherein: The activation time of the first DRX group includes the activation time of the at least one DRX group.

11. The method according to claim 9 or 10, wherein: CSI for one or more cells in the at least one DRX group is received.

12. The method according to any one of claims 9 to 11, wherein: In a case where the multiple DRX groups further include a second DRX group having a second cell configured with CSI reporting resources, when the at least one DRX group includes a first DRX group, receiving CSI for one or more cells in the first DRX group through the CSI reporting resources on the first cell, and the method further includes: When the at least one DRX group includes the second DRX group, CSI for one or more cells in the second DRX group is received through the CSI reporting resource of the second cell.

13. The method according to any one of claims 9 to 12, wherein: In case that the CSI mask is configured, if a DRX on-duration timer for the at least one DRX group is running, the CSI is received.

14. The method according to any one of claims 9 to 13, wherein: The first DRX group corresponds to a first timing advance group.

15. The method according to any one of claims 9 to 14, wherein: CSI for one or more cells in an activation time is received.

16. The method according to any one of claims 9 to 15, wherein: CSI for one or more cells being activated is received.

17. An apparatus comprising: at least one processor; as well as at least one memory including computer program code, the at least one memory and the computer program code being configured, with the at least one processor, to cause the apparatus to perform: receiving discontinuous reception (DRX) configuration information for configuring a plurality of DRX groups, the plurality of DRX groups including a first DRX group having a first cell configured with a channel state information (CSI) reporting resource; Determine at least one DRX group in the activation time from the plurality of DRX groups; as well as Based on the DRX configuration information and the activation time, CSI is reported through CSI reporting resources on the first cell.

18. The device of claim 17, wherein: The activation time of the first DRX group includes the activation time of the at least one DRX group.

19. The device according to claim 17 or 18, wherein: Reporting CSI for one or more cells in the at least one DRX group.

20. The device according to any one of claims 17 to 19, wherein In a case where the multiple DRX groups further include a second DRX group having a second cell configured with CSI reporting resources, when the at least one DRX group includes the first DRX group, reporting CSI for one or more cells in the first DRX group through the CSI reporting resources on the first cell, and the at least one memory and the computer program code are configured to, together with the at least one processor, cause the apparatus to further perform When the at least one DRX group includes the second DRX group, CSI for one or more cells in the second DRX group is reported through a CSI reporting resource on the second cell.

21. The device according to any one of claims 17 to 20, wherein: In case the CSI mask is configured, if the DRX OnDuration timer for the at least one DRX group is running, the CSI is reported.

22. The device according to any one of claims 17 to 21, wherein: The first DRX group corresponds to a first timing advance group.

23. The device according to any one of claims 17 to 22, wherein: Report CSI for one or more cells in the activation time.

24. The device according to any one of claims 17 to 23, wherein: The CSI for the cell or cells being activated is reported.

25. An apparatus comprising: at least one processor; as well as at least one memory including computer program code, the at least one memory and the computer program code being configured, with the at least one processor, to cause the apparatus to perform: sending discontinuous reception (DRX) configuration information for configuring a plurality of DRX groups, the plurality of DRX groups including a first DRX group having a first cell configured with a channel state information (CSI) reporting resource; Determine at least one DRX group in the activation time from the plurality of DRX groups; as well as Based on the DRX configuration information and the activation time, CSI is received through a CSI reporting resource on the first cell.

26. The device of claim 25, wherein: The activation time of the first DRX group includes the activation time of at least one DRX group.

27. The device of claim 25 or 26, wherein: CSI for one or more cells in the at least one DRX group is received.

28. The device according to any one of claims 25 to 27, wherein In a case where the plurality of DRX groups further include a second DRX group having a second cell configured with CSI reporting resources, when the at least one DRX group includes a first DRX group, receiving CSI for one or more cells in the first DRX group through the CSI reporting resources on the first cell, and the at least one memory and the computer program code are configured to, together with the at least one processor, cause the apparatus to further execute When the at least one DRX group includes the second DRX group, CSI for one or more cells in the second DRX group is received through the CSI reporting resource of the second cell.

29. The device according to any one of claims 25 to 28, wherein In case that the CSI mask is configured, if the DRX OnDuration timer for the at least one DRX group is running, the CSI is received.

30. The device of any one of claims 25 to 29, wherein: The first DRX group corresponds to a first timing advance group.

31. The device of any one of claims 25 to 30, wherein: CSI for one or more cells in an activation time is received.

32. The device of any one of claims 25 to 31, wherein: CSI for one or more cells being activated is received.

33. An apparatus comprising: means for receiving discontinuous reception (DRX) configuration information for configuring a plurality of DRX groups, the plurality of DRX groups including a first DRX group having a first cell configured with channel state information (CSI) reporting resources; means for determining at least one DRX group in an activation time from among the plurality of DRX groups; as well as A device for reporting CSI through CSI reporting resources on the first cell based on the DRX configuration information and the activation time.

34. An apparatus comprising: means for transmitting DRX configuration information for configuring a plurality of discontinuous reception (DRX) groups, the plurality of DRX groups including a first DRX group having a first cell configured with a channel state information (CSI) reporting resource; means for determining at least one DRX group in an activation time from among the plurality of DRX groups; as well as A device for receiving CSI through CSI reporting resources on the first cell based on the DRX configuration information and the activation time.

35. A computer readable medium comprising program instructions for causing an apparatus to: receiving discontinuous reception (DRX) configuration information for configuring a plurality of DRX groups, the plurality of DRX groups including a first DRX group having a first cell configured with a channel state information (CSI) reporting resource; Determine at least one DRX group in the activation time from the plurality of DRX groups; as well as Based on the DRX configuration information and the activation time, CSI is reported through CSI reporting resources on the first cell.

36. A computer readable medium comprising program instructions for causing an apparatus to: sending discontinuous reception (DRX) configuration information for configuring a plurality of discontinuous reception (DRX) groups, the plurality of DRX groups including a first DRX group having a first cell configured with a channel state information (CSI) reporting resource; determining at least one DRX group in an activation time from among the plurality of DRX groups; and Based on the DRX configuration information and the activation time, CSI is received through a CSI reporting resource on the first cell.

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