Method and apparatus for reporting channel status information

Abstract

A method for reporting channel status information (CSI). [Solution] An exemplary method may include receiving discontinuous reception (DRX) configuration information to constitute a plurality of DRX groups, including a first DRX group having a first cell configured with a CSI reporting resource; determining at least one DRX group from the plurality of DRX groups during the active time; and reporting a CSI via the CSI reporting resource on the first cell based on the DRX configuration information and the active time. Related devices and computer-readable media are also disclosed.

Description

Technical Field

[0001] Various exemplary embodiments relate to methods and apparatuses for channel state information (CSI) reporting.

Background Art

[0002] 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) can report CSI to a base station (BS, e.g., an eNB in an LTE system or a gNB in an NR system) via a CSI reporting resource.

Summary of the Invention

[0003] In a first aspect, a method is disclosed. The method of the present application can include the steps of receiving discontinuous reception (DRX) configuration information for configuring a plurality of DRX groups including a first DRX group having a first cell configured using a CSI reporting resource, determining at least one DRX group at an active time from the plurality of DRX groups, and reporting CSI via a CSI reporting resource on the first cell based on the DRX configuration information and the active time.

[0004] In some embodiments, the active time of the first DRX group can include the active time of at least one DRX group.

[0005] In some embodiments, CSI for one or more cells in at least one DRX group can be reported.

[0006] In some embodiments, if a plurality of DRX groups can further include a second DRX group having a second cell configured with a CSI reporting resource, then when at least one DRX group includes a first DRX group, the CSI of one or more cells in the first DRX group can be reported via the CSI reporting resource on the first cell, and this method can further include reporting the CSI of one or more cells in the second DRX group via the CSI reporting resource on the second cell when at least one DRX group includes a second DRX group.

[0007] In some embodiments, if a CSI mask is configured, a CSI may be reported if a DRX-on duration timer is running for at least one DRX group.

[0008] In some embodiments, the method may further include receiving a configuration for 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.

[0009] In some embodiments, the first DRX group may correspond to the first timing advance group.

[0010] In some embodiments, the CSI of one or more cells during active time may be reported.

[0011] In some embodiments, CSI of one or more activated cells may be reported.

[0012] A second aspect discloses a method. The method may include the steps of: transmitting DRX configuration information for configuring a plurality of DRX groups, including a first DRX group having a first cell configured with a CSI reporting resource; determining at least one DRX group from the plurality of DRX groups during active time; and receiving CSI via a CSI reporting resource on the first cell based on the DRX configuration information and active time.

[0013] In some embodiments, the active time of the first DRX group may include the active time of at least one DRX group.

[0014] In some embodiments, CSIs may be received for one or more cells in at least one DRX group.

[0015] In some embodiments, if a plurality of DRX groups may further include a second DRX group having a second cell configured with a CSI reporting resource, then when at least one DRX group includes a first DRX group, CSIs for one or more cells in the first DRX group may be received via the CSI reporting resource on the first cell, and the method may further include, when at least one DRX group includes a second DRX group, receiving CSIs for one or more cells in the second DRX group via the CSI reporting resource having the second cell.

[0016] In some embodiments, if a CSI mask is configured, a CSI may be received if a DRX-on duration timer is running for at least one DRX group.

[0017] In some embodiments, the method of the present invention may further include the steps of transmitting a configuration on a CSI report for one or more cells in a plurality of DRX groups, and receiving a CSI for one or more cells in a plurality of DRX groups according to the configuration.

[0018] In some embodiments, the first DRX group may correspond to the first timing advance group.

[0019] In some embodiments, CSIs may be received for one or more cells during active time.

[0020] In some embodiments, a CSI may be received for one or more activated cells.

[0021] 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 cause the apparatus to perform the following steps using at least one processor: receiving DRX configuration information for configuring a plurality of DRX groups, including a first DRX group having a first cell configured with a CSI reporting resource; determining at least one DRX group from the plurality of DRX groups during active time; and reporting a CSI via the CSI reporting resource on the first cell based on the DRX configuration information and active time.

[0022] In some embodiments, the active time of the first DRX group may include the active time of at least one DRX group.

[0023] In some embodiments, CSI may be reported for one or more cells in at least one DRX group.

[0024] In some embodiments, when the plurality of DRX groups further includes a second DRX group having a second cell configured with CSI reporting resources, the CSI of one or more cells of the first DRX group can be reported via the CSI reporting resources of the first cell when at least one DRX group includes the first DRX group, and at least one memory and computer program code can be configured to cause the apparatus, using at least one processor, to further report the CSI reporting resources of one or more cells of the second cell via the CSI reporting resources of the second cell when at least one DRX group includes the second DRX group.

[0025] In some embodiments, when a CSI mask is configured, CSI can be reported when a DRX on-duration timer for at least one DRX group is running.

[0026] In some embodiments, at least one memory and computer program code can be configured to cause the apparatus, using at least one processor, to receive a configuration regarding CSI reporting for one or more cells in a plurality of DRX groups and to report CSI for one or more cells in the plurality of DRX groups according to the configuration.

[0027] In some embodiments, the first DRX group may correspond to a first timing advance group.

[0028] In some embodiments, the CSI of one or more cells during active time can be reported.

[0029] In some embodiments, the CSI of one or more activated cells can be reported.

[0030] In a fourth aspect, an apparatus is disclosed. The apparatus can include at least one processor and at least one memory. The at least one memory includes computer program code, and the computer program code is configured to cause the apparatus, using at least one processor, to perform steps of transmitting DRX configuration information for configuring a plurality of DRX groups including a first DRX group having a first cell configured using a CSI reporting resource; determining at least one DRX group during active time from the plurality of DRX groups; and receiving CSI via the CSI reporting resource on the first cell based on the DRX configuration information and the active time.

[0031] In some embodiments, the active time of the first DRX group can include the active time of at least one DRX group.

[0032] In some embodiments, CSI for one or more cells in at least one DRX group can be received.

[0033] In some embodiments, when the plurality of DRX groups further includes a second DRX group having a second cell configured using a CSI reporting resource, when at least one DRX group includes the first DRX group, the CSI of one or more cells in the first DRX group can be on the CSI reporting resource on the first cell, and the at least one memory and the computer program code are configured to cause the apparatus, using at least one processor, to further perform a step of receiving the CSI of one or more cells in the second DRX group on the CSI reporting resource using the second cell when the second DRX group includes the second DRX group.

[0034] In some embodiments, when a CSI mask is configured, CSI can be received when a DRX on-duration timer for at least one DRX group is running.

[0035] In some embodiments, at least one memory and computer program code are configured to cause the device to perform the steps of: sending a configuration for CSI reporting for one or more cells in a plurality of DRX groups, and receiving CSIs for one or more cells in a plurality of DRX groups, using at least one processor.

[0036] In some embodiments, the first DRX group may correspond to the first timing advance group.

[0037] In some embodiments, CSIs may be received for one or more cells during active time.

[0038] In some embodiments, a CSI may be received for one or more activated cells.

[0039] In a fifth aspect, an apparatus is disclosed. This apparatus may include means for receiving DRX configuration information for configuring a plurality of DRX groups, including a first DRX group having a first cell configured with a CSI reporting resource; means for determining at least one DRX group from the plurality of DRX groups during active time; and means for reporting CSI via a CSI reporting resource on the first cell based on the DRX configuration information and active time.

[0040] In some embodiments, the active time of the first DRX group may include the active time of at least one DRX group.

[0041] In some embodiments, CSI may be reported for one or more cells in at least one DRX group.

[0042] In some embodiments, a plurality of DRX groups may further include a second DRX group having a second cell configured with a CSI reporting resource, and when at least one DRX group includes a first DRX group, the CSI of one or more cells in the first DRX group may be reported via the CSI reporting resource on the first cell, and the device may further include means for reporting the CSI of one or more cells in the second DRX group via the CSI reporting resource on the second cell when at least one DRX group includes a second DRX group.

[0043] In some embodiments, if a CSI mask is configured, a CSI may be reported if a DRX-on duration timer is running for at least one DRX group.

[0044] In some embodiments, the apparatus of the present invention may further include means for receiving configurations relating to CSI reports for one or more cells in a plurality of DRX groups, and means for reporting CSIs for one or more cells in a plurality of DRX groups according to the configuration.

[0045] In some embodiments, the first DRX group may correspond to the first timing advance group.

[0046] In some embodiments, the CSI of one or more cells during active time may be reported.

[0047] In some embodiments, CSI of one or more activated cells may be reported.

[0048] In a sixth aspect, an apparatus is disclosed. The apparatus may include means for transmitting DRX configuration information to constitute a plurality of DRX groups, including a first DRX group having a first cell configured with a CSI reporting resource; means for determining at least one DRX group from the plurality of DRX groups during active time; and means for receiving CSI via a CSI reporting resource on the first cell based on the DRX configuration information and active time.

[0049] In some embodiments, the active time of the first DRX group may include the active time of at least one DRX group.

[0050] In some embodiments, CSIs may be received for one or more cells in at least one DRX group.

[0051] In some embodiments, a plurality of DRX groups may further include a second DRX group having a second cell configured with a CSI reporting resource, and when at least one DRX group includes a first DRX group, the CSI of one or more cells in the first DRX group may be on the CSI reporting resource on the first cell, and when at least one DRX group includes a second DRX group, the apparatus of the present invention may further include means for receiving the CSI of one or more cells in the second DRX group on the CSI reporting resource with the second cell.

[0052] In some embodiments, if a CSI mask is configured, a CSI may be received if a DRX-on duration timer is running for at least one DRX group.

[0053] In some embodiments, the apparatus of the present invention may further include means for transmitting a configuration on a CSI report for one or more cells in a plurality of DRX groups, and means for receiving CSIs for one or more cells in a plurality of DRX groups according to the configuration.

[0054] In some embodiments, the first DRX group may correspond to the first timing advance group.

[0055] In some embodiments, the CSI of one or more cells during active time may be reported.

[0056] In some embodiments, a CSI may be received for one or more activated cells.

[0057] In a seventh aspect, a computer-readable medium is disclosed. The computer-readable medium includes the step of receiving DRX configuration information for configuring a plurality of DRX groups, including a first DRX group having a first cell configured using CSI reporting resources, The program includes instructions that cause a program to perform the steps of determining at least one DRX group from a plurality of DRX groups during the active time, and reporting a CSI via a CSI reporting resource on a first cell based on the DRX configuration information and the active time.

[0058] In some embodiments, the active time of the first DRX group may include the active time of at least one DRX group.

[0059] In some embodiments, CSI may be reported for one or more cells in at least one DRX group.

[0060] In some embodiments, if a plurality of DRX groups may further include a second DRX group having a second cell configured with a CSI reporting resource, then when at least one DRX group includes a first DRX group, the CSI of one or more cells in the first DRX group may be reported via the CSI reporting resource on the first cell, and the computer-readable media may further include program instructions causing the device to report the CSI of one or more cells in the second DRX group via the CSI reporting resource on the second cell, when at least one DRX group includes a second DRX group.

[0061] In some embodiments, if a CSI mask is configured, a CSI may be reported if a DRX-on duration timer is running for at least one DRX group.

[0062] In some embodiments, the computer-readable media may further include program instructions causing the device to perform the steps of receiving a configuration relating to CSI reporting for one or more cells in a plurality of DRX groups, and reporting CSI for one or more cells in a plurality of DRX groups according to the configuration.

[0063] In some embodiments, the first DRX group may correspond to the first timing advance group.

[0064] In some embodiments, the CSI of one or more cells during active time may be reported.

[0065] In some embodiments, CSI of one or more activated cells may be reported.

[0066] In the eighth aspect, a computer-readable medium is disclosed. The computer-readable medium transmits to the device DRX configuration information for configuring a plurality of DRX groups, including a first DRX group having a first cell configured using CSI reporting resources. The program instructions may include steps to perform the steps of determining at least one DRX group from multiple DRX groups during the active time, and receiving a CSI via a CSI reporting resource on the first cell based on the DRX configuration information and the active time.

[0067] In some embodiments, the active time of the first DRX group may include the active time of at least one DRX group.

[0068] In some embodiments, CSIs may be received for one or more cells in at least one DRX group.

[0069] In some embodiments, if a plurality of DRX groups may further include a second DRX group having a second cell configured with a CSI reporting resource, then when at least one DRX group includes a first DRX group, the CSI of one or more cells in the first DRX group may be on the CSI reporting resource on the first cell, and the computer-readable media may further include program instructions causing the device to perform the step of receiving the CSI of one or more cells in the second DRX group on the CSI reporting resource having the second cell, when at least one DRX group includes a second DRX group.

[0070] In some embodiments, if a CSI mask is configured, a CSI may be received if a DRX-on duration timer is running for at least one DRX group.

[0071] In some embodiments, the computer-readable media may further include program instructions causing the device to perform the steps of: transmitting a configuration relating to a CSI report for one or more cells in a plurality of DRX groups; and receiving a CSI for one or more cells in a plurality of DRX groups based on the configuration.

[0072] In some embodiments, the first DRX group may correspond to the first timing advance group.

[0073] In some embodiments, CSIs may be received for one or more cells during active time.

[0074] In some embodiments, a CSI may be received for one or more activated cells. [Brief explanation of the drawing]

[0075] Herein, several exemplary embodiments will be described as non-limiting examples with reference to the accompanying drawings. [Figure 1] Figure 1 shows an example of multiple DRX groups. [Figure 2] Figure 2 shows an example of CSI reporting via a CSI reporting resource. [Figure 3] Figure 3 shows an exemplary method for CSI reporting in one embodiment. [Figure 4] Figure 4 shows another exemplary method for CSI reporting in one embodiment. [Figure 5] Figure 5 shows another example of multiple DRX groups. [Figure 6] Figure 6 shows an exemplary method for CSI reporting in one embodiment. [Figure 7] Figure 7 shows another exemplary method for CSI reporting in one embodiment. [Figure 8] Figure 8 shows an exemplary apparatus for CSI reporting in one embodiment. [Figure 9] Figure 9 shows an exemplary apparatus for CSI reporting in one embodiment. [Figure 10] Figure 10 shows an exemplary apparatus for CSI reporting in one embodiment. [Figure 11] Figure 11 shows an exemplary apparatus for CSI reporting in one embodiment. [Modes for carrying out the invention]

[0076] Multiple DRX groups may be configured to improve power saving. Cells for a UE may belong to multiple DRX groups, at least one cell in at least one DRX group may be configured with CSI reporting resources, and DRX groups may be the basis of cells having the same active time. For example, one or more cells related to a first frequency range (e.g., FR1) may be configured in a first DRX group, and one or more cells related to 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 active times. Active time may include the time while at least one of the DRX timers is operating. DRX timers include duration timers (e.g., Drx-onDurationTimer), DRX inactivity timers (e.g., Drx-InactivityTimer), DRX retransmission timers downlink (e.g., DRX-RetransmissionTimerDL), DRX retransmission timers uplink (e.g., DRX-RetransmissionTimerUL), ra-ContentionResolutionTimer, etc., as described in the Technical Standards (TS) of the Third Generation Partnership Project (3GPP®) (e.g., 3GPP® TS 38.321).

[0077] A DRX cycle includes a DRX active time (i.e., on duration) during which the UE monitors the physical downlink control channel (PDCCH) or downlink control information (DCI), and a DRX period (i.e., off duration) during which the UE can skip receiving downlink channels to conserve battery power. The on duration timer indicates the duration of the on time within a single DRX cycle, and the DRX non-activity timer specifies how long the UE should remain "on" (active time) after receiving a PDCCH. When this timer is on, the UE remains "on," which can extend the UE's active time to a period that would otherwise be the off duration. The DRX retransmission timer indicates the maximum number of consecutive PDCCH subframes the UE should remain active to wait for retransmissions (or re-transmissions) that occur after the initial available retransmission time. DRX cycles include short and long DRX cycles. Short DRX cycles can be implemented within the DRX period (off duration) of a long DRX cycle. The DRX short cycle timer indicates the number of consecutive subframes in which the UE will follow a short DRX cycle after the DRX non-activity timer expires.

[0078] Figure 1 shows an example of multiple DRX groups. In Figure 1, as an example of multiple DRX groups, a primary DRX group associated with a first frequency FR1 (i.e., P-DRX) and a secondary DRX group associated with a second frequency FR2 (i.e., S-DRX) are shown. 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 drx-onDurationTimer described above, and drx-InactivityTimer1 and drx-InactivityTimer2 may be, for example, the drx-InactivityTimer described above. In other embodiments, P-DRX may be associated with FR2, 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).

[0079] As shown in Figure 1, for example, the PDCCH for one or more cells in the P-DRX (e.g., one or more activated serving cells or one or more cells) may be monitored by the UE during the P-DRX's active time, for example, when drx-onDurationTimer1 (and / or drx-InactivityTimer1) is running, and the UE may stop monitoring the PDCCH outside of the P-DRX's active time to conserve power. Similarly, in Figure 1, the PDCCH for one or more cells in the S-DRX (e.g., one or more serving cells or activated cells) may be monitored by the UE during the S-DRX's active time, for example, when drx-onDurationTimer2 (and / or drx-InactivityTimer2) is running, and the UE may stop monitoring the PDCCH outside of the S-DRX's active time to conserve power.

[0080] Figure 2 shows an example of a CSI reporting resource. In Figure 2, 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 consist of a CSI reporting resource, and at least one cell having a CSI reporting resource 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 consist of CSI reporting resources, in which case the SCell may be a PUCCH SCell. If a cell in S-DRX is not configured with a CSI reporting resource, CSI for one or more cells in S-DRX may be reported via a CSI reporting resource on a PCell. In Figure 2, PUCCH is shown as an example of a CSI reporting resource for a UE to report CSI, and it should be noted that CSI reporting resources may also include physical uplink shared channels (PUSCH) and / or other radio resources.

[0081] Furthermore, for example, one or more long DRX periods and one or more short DRX periods, which may be associated with drx-ShortCycleTimer, may be configured for multiple DRX groups. For example, the length of the long DRX period and the short DRX period may be configured to be common to both the above FR1 associated with P-DRX and the above FR2 associated with S-DRX. Thus, for example, when multiple DRX groups and long / short DRX periods are configured, there may be different activity patterns across the frequencies of P-DRX and S-DRX. For example, cells in S-DRX may still follow the Short DRX period, while cells in P-DRX may have already fallen back to the long DRX period.

[0082] Figure 3 shows an exemplary method 300 for CSI reporting in one embodiment, which may be performed in a device such as an UE or at least a portion of an UE.

[0083] As shown in Figure 3, the exemplary 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 contained in a high-layer message (e.g., a Media 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 CSI reporting resources. Furthermore, the exemplary method 300 may include a step 320 of determining at least one DRX group in the active time from the plurality of DRX groups, Step 330 may include reporting CSIs based on DRX configuration information and active time across CSI reporting resources. For example, if at least one DRX group during the active time determined in step 320 includes a first DRX group, then in step 330 CSIs for one or more cells in the first DRX group (e.g., one or more serving cells, or one or more activated cells) may be reported on the first cell's CSI reporting resource. If at least one DRX group active time determined in step 320 includes a second DRX different from the first DRX, then CSIs for one or more cells in the second DRX group (e.g., one or more serving cells, or one or more activated cells) may be reported on the first cell's CSI reporting resource in step 330, and at least one of the active times does not include a first DRX group having the first cell providing the CSI reporting resource. CSIs are reported via the first cell even if the CSI reporting resource (opportunity) is not active, in the case of a serving cell of an S-DRX where the CSI reporting is during the active time.In another embodiment, if, in addition to the first cell of the first DRX group, there are multiple DRX groups that include yet another DRX group, and there is a second cell that provides CSI reporting resources to this DRX group, then in step 330, depending on the DRX configuration information and at least one DRX group in the active time determined in step 320, for example, the CSI reporting resources of the first cell may be used to report the CSI of one or more cells in the first DRX group (e.g., one or more served cells, or one or more active cells, or one or more activated cells) if the first DRX group belongs to at least one DRX group in the active time, or it may be used to report the CSI of one or more cells (e.g., one or more served cells, or one or more activated cells) in another DRX group that is different from the first DRX group but belongs to at least one activated DRX group, even if the at least one activated DRX group does not include the first DRX group. Further examples and details are shown below.

[0084] In relation to the example in Figure 1 or Figure 2, in step 310, it may be determined that multiple DRX groups are configured and that cells within a P-DRX (e.g., PCells within a P-DRX) are configured to provide CSI reporting resources, such as PUCCH or PUSCH. For example, if an S-DRX is not configured with CSI reporting resources, then CSI for one or more cells in at least one of the P-DRX and S-DRX (e.g., one or more serving cells, or one or more activated cells) may be reported via the CSI reporting resources of the cells in the P-DRX. The first cell may be, for example, a PCell or a PScell.

[0085] In step 320, one or more DRX groups may be determined during the active time. If at least one DRX group is in the active time, in step 330, the UE reports the CSI via the CSI reporting resource on the first cell. The CSI may be measured, for example, in step 320, by any suitable method.

[0086] For example, when a P-DRX containing the first cell is not in active time, and an S-DRX is in active time, a CSI for one or more cells in the S-DRX (e.g., one or more activated serving cells or one or more cells) may be reported via a CSI reporting resource on the first cell. For example, CSI reporting on a cell may be independent of the active time of the cell to which the CSI reporting resource is reported, and may depend on the active time of the cell to which the CSI is reported. Therefore, if the cell to which the CSI is reported is in active time, the CSI will be reported for that cell regardless of whether the cell of the CSI reporting the resource to which the CSI is reported is in active time. In other words, even if a P-DRX group is in a DRX period (i.e., off-duration), the UE can report the CSI of the cells in the S-DRX group to the gNB via a CSI reporting resource configured for the P-DRX group when the S-DRX group is in active time. In this case, the CSI reporting resource is configured by the gNB as a legacy method (e.g., a CSI configuration information element (IE) in an RRC message).

[0087] When both P-DRX and S-DRX are active, One or more cells in P-DRX (for example, one or more serving cells or one or more cells that are activated) and A CSI for one or more cells in an S-DRX (for example, one or more serving cells or one or more cells that are activated) may be reported via a CSI reporting resource on the first cell.

[0088] If neither P-DRX nor S-DRX is active, CSI may not be reported.

[0089] Therefore, PDCCH monitoring can be independent for two DRX groups, but CSI reporting can depend on the active time of both DRX groups. Consequently, for a DRX group configured with CSI reporting resources, the UE cannot monitor PDCCH regardless of whether CSI reporting is performed. This allows for reduced power consumption of the device.

[0090] In one embodiment, the active time of the first DRX group (or P-DRX) may include the active time of at least one DRX group. Taking the above-mentioned P-DRX and S-DRX as examples of DRX groups, the P-DRX may be active if the S-DRX is active.

[0091] For example, a CSI for one or more cells in a P-DRX (e.g., one or more serving cells, or one or more activated cells) may be reported via a CSI reporting resource on the first cell when the P-DRX is active and the S-DRX is not. Furthermore, a CSI for one or more cells in both the P-DRX and S-DRX (e.g., one or more serving cells, or one or more activated cells) may be reported via a CSI reporting resource on the first cell when the S-DRX is active.

[0092] In this embodiment, for example, a drx-ShortCycleTimer for a DRX group configured with a CSI reporting resource (e.g., as provided in 3GPP® TS38.321) may not be affected, and the DRX group may remain on a short cycle when other DRX groups are using a short cycle, or the CSI report will follow a short cycle if at least one DRX group to which a CSI report is being reported is using a short cycle.

[0093] In one embodiment, the CSI of one or more cells (e.g., one or more serving cells, or one or more activated cells) within at least one DRX group during the active time may be reported in step 330. Taking the P-DRX and S-DRX described above as examples of DRX groups, the UE can report the CSI for the serving cells of the DRX group during the active time via a CSI reporting resource.

[0094] For example, if P-DRX is not active and S-DRX is active, the UE may report the CSI for the serving cell (or one or more activated cells) in S-DRX during active time via the CSI reporting resource on the first cell of P-DRX, but may not report the CSI for other cells. If S-DRX is not active and P-DRX is active, the UE may report the CSI for the serving cell (or one or more activated cells) in P-DRX during active time via the CSI reporting resource on the first cell of P-DRX. CSI for other cells cannot be reported. If P-DRX is not active, CSI for serving cells in P-DRX may not be reported, and if S-DRX is not active, CSI for serving cells in S-DRX may not be reported.

[0095] In this embodiment, the UE can report CSI for fewer cells, and fewer CSI resources may be used. The CSI reporting resources for serving cells in a P-DRX group can be configured by the network entity separately from those in an S-DRX group. Thus, power consumption can be reduced.

[0096] In one embodiment, a plurality of DRX groups may further include a second DRX group having a second cell configured with a CSI reporting resource. In such a case, step 330 may include reporting a CSI for one or more cells in the first DRX group via the CSI reporting resource on the first cell when at least one DRX group includes the first DRX group, and exemplary method 300 may further include reporting a CSI for one or more cells in the second DRX group via the CSI reporting resource on the second cell when at least one DRX group includes the second DRX group. Thus, a CSI for one or more cells in a DRX group may be reported via the CSI reporting resource on a cell within its own base, and therefore, a CSI report for a DRX group may be independent of a CSI report for another DRX group, and a CSI for a different DRX group may be reported when the corresponding DRX group is active.

[0097] Figure 4 shows the steps of exemplary method 300 and an exemplary method 400 for CSI reporting in one embodiment, which may include additional steps 410 and 420. The P-DRX and S-DRX described above are examples of DRX groups. In step 410, it may be determined whether the DRX groups further include a second DRX group having a second cell configured with a CSI reporting resource. If there is no such second cell (branch 410 "N"), step 330 may include reporting a CSI for one or more cells in at least one DRX group (e.g., one or more serving cells, or one or more cells that are activated) via the CSI reporting resource on the first cell. If the second cell of the second DRX group is configured with a CSI reporting resource (step 410 "Y" branch), step 330 may include reporting a CSI for one or more cells in the first DRX group via the CSI reporting resource on the first cell, when at least one DRX group includes the first DRX group, and in step 420, a CSI for one or more cells in the second DRX group may be reported via the CSI reporting resource on the second cell, when at least one DRX group in the active time includes the second DRX group.

[0098] For example, if the cells of the first DRX group (e.g., P-DRX) consist of CSI reporting resources such as PUCCH and / or PUSCH resources, and the cells of the second DRX group (e.g., S-DRX) consist of CSI reporting resources such as PUCCH and / or PUSCH resources, then the CSI reporting for P-DRX and S-DRX may operate independently based on the active times 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 may be on the same CSI reporting resources on the cells of P-DRX. It should be understood that the steps of method 400 are not limited to the order shown in Figure 4. For example, step 410 may be performed before step 320.

[0099] For example, CSIs for one or more cells in a P-DRX may be reported on the CSI reporting resource on the first cell (e.g., PCell), and / or CSIs for one or more cells in an S-DRX may be reported on the CSI reporting resource on the second cell (e.g., PUCCH SCell). For example, if the P-DRX is not active and the CSI reporting resource does not include CSI reporting for serving cells in the S-DRX, then the CSI may not be reported.

[0100] In one embodiment, if a CSI mask is configured, a CSI may be reported if a DRX-on duration timer is running for at least one DRX group. Figure 5 shows another example of multiple DRX groups. As shown in Figure 5, for example, P-DRX may be in a long DRX period and S-DRX may be in a short DRX period. For example, if a CSI mask is configured, a CSI may be reported via a CSI reporting resource when drx-onDurationTimer2 is running but drx-onDurationTimer1 is not.

[0101] For example, if S-DRX is not configured with a CSI reporting resource and a CSI mask is configured, and the drx-onDurationTimer2 of S-DRX is running, then CSIs for one or more cells in S-DRX (e.g., serving cells or activated cells) may be reported via a CSI reporting resource on the first cell of P-DRX. The CSI reporting resource is composed of high-layer signals (e.g., MAC or RRC messages), and the CSI reporting resource is restricted to the DRX period (i.e., off-duration), thereby preventing the UE from reporting when it is not in active time. However, the UE of the embodiment is configured to report a CSI in the CSI reporting resource during the DRX period if a cell in another DRX group that is the subject of the CSI reporting is in active time. CSI reporting is for cells that are active, and therefore the UE is measuring those cells anyway. In the example shown in Figure 5, when drx-onDurationTimer1 is running, CSI for one or more cells in the P-DRX may be reported, and when Drx-onDurationTimer2 is running, CSI for one or more cells in the S-DRX may be reported. Furthermore, for example, when drx-onDurationTimer1 is not running and drx-onDurationTimer2 is running, CSI for one or more cells in the S-DRX may be reported on the CSI reporting resource on the first cell of the P-DRX. Furthermore, for example, when drx-onDurationTimer2 is not running, CSI for one or more cells in the S-DRX may not be reported.

[0102] In this exemplary embodiment, CSIs for DRX groups without CSI reporting resources can be reported when the drx-onDurationTimer for DRX groups with cells configured using CSI reporting resources is not running, for example, on a long DRX, and when a CSI mask is configured. For example, if a CSI mask (CSI-mask) is set by a higher layer, but the DRX group is not running drx-onDurationTimer, CSIs for this DRX group may not be reported.

[0103] In one embodiment, an exemplary method may further include the steps of receiving a configuration (e.g., an RRC configuration) relating to 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, for example, report a serving cell or a serving cell during an active time, regardless of the active time in a given DRX group, according to the RRC configuration.

[0104] In one embodiment, a first DRX group may correspond to a 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 cells associated with P-DRX, and a secondary TAG (STAG) may be configured for cells associated with S-DRX.

[0105] In various forms, the CSI of one or more cells during active time is reported. For example, the CSI for one or more cells during active time may be reported, but the CSI for one or more cells that are not during active time may not be reported.

[0106] In various forms, CSIs for one or more activated cells are reported. For example, CSIs for one or more activated cells may be reported, while CSIs for one or more unactivated cells may not be reported.

[0107] Figure 6 shows an exemplary method 600 for a CSI reporting procedure in one embodiment, which may be performed in an apparatus such as a BS or at least a portion of a BS to work in conjunction with exemplary method 300 or 400.

[0108] As shown in Figure 6, exemplary method 600 may include a step 610 of transmitting DRX configuration information to constitute a plurality of DRX groups. The DRX configuration information may be contained in a high-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 a CSI reporting resource. Exemplary method 600 may include a step 620 of determining at least one DRX group in active time from the plurality of DRX groups, and a step 630 of receiving a CSI via the CSI reporting resource on the first cell based on the DRX configuration information and active time.

[0109] Exemplary Method 600 may be performed, for example, in conjunction with Exemplary Method 300 or 400. Therefore, the various features and aspects described above with respect to Exemplary Method 300 or 400 may also be applied to, included in, or combined with Exemplary Method 600.

[0110] For example, in exemplary method 600, the active time of the first DRX group may include the active time of at least one DRX group.

[0111] For example, in exemplary method 600, a CSI may be received for one or more cells in at least one DRX group.

[0112] For example, in exemplary method 600, if a plurality of DRX groups may further include a second DRX group having a second cell configured with a CSI reporting resource, then when at least one DRX group includes a first DRX group, CSIs for one or more cells in the first DRX group may be received via the CSI reporting resource on the first cell, and method 600 may further include receiving CSIs for one or more cells in the second DRX group via the CSI reporting resource having the second cell when at least one DRX group includes a second DRX group.

[0113] For example, in exemplary method 600, if a CSI mask is configured, a CSI may be received if a DRX-on duration timer is running for at least one DRX group.

[0114] In some embodiments, method 600 may further include transmitting a configuration on a CSI report for one or more cells in a plurality of DRX groups, and receiving a CSI for one or more cells in a plurality of DRX groups according to the configuration.

[0115] For example, in the exemplary method 600, the first DRX group may correspond to the first timing advance group.

[0116] For example, in exemplary method 600, CSIs may be received for one or more cells during the active time.

[0117] For example, in exemplary method 600, a CSI may be received for one or more activated cells.

[0118] In the exemplary embodiments described above, two DRX groups, P-DRX and S-DRX, may be given as examples, and it should be understood that the exemplary embodiments can function when more DRX groups are configured. When multiple DRX groups are configured, the availability of CSI information reporting from the UE to the BS can be guaranteed. It should be understood that UE may refer to equipment such as the UE or at least a part of the UE, and BS may refer to equipment such as the BS or at least a part of the BS.

[0119] Figure 7 shows another exemplary method for CSI reporting in one embodiment.

[0120] The gNB configures two or more DRX groups for one or more UEs covered by the gNB (710).

[0121] The gNB sends a high-layer message (e.g., RRC) to the UE containing DRX configuration information (also referred to herein as DRX-Config) elements for configuring two or more DRX groups (720). The DRX configuration information elements include at least one of the following: drx-onDurationTimer, drx-InactivityTimer, DRX retransmission timer downlink (i.e., DRX-RetransmissionTimerDL), DRX retransmission timer uplink (i.e., DRX-RetransmissionTimerUL), ra-ContentionResolutionTimer, drx-LongCycleStartOffset, or drx-ShortCycle parameters for the first and second DRX groups.

[0122] A Media Access Control (MAC) entity of a UE may be configured with a DRX function that controls the UE's PDCCH monitoring activity for the MAC entity via RRC messages. When using DRX operation, the UE's MAC entity also monitors the PDCCH according to the embodiments described above. When the UE is in the RRC_CONNECTED state and DRX is configured for an activated serving cell, the UE's MAC entity may monitor the search space for discontinuous decoding of the PDCCH using the embodiments described above and one of the DRX operations described in Figures 1 to 6 (730).

[0123] During the active time of the configured DRX period, the UE can decode at least one DCI transmitted via the PDCCH in at least one of two or more DRX groups (740).

[0124] When a DRX period is configured for two or more DRX groups, the active time for a DRX group (e.g., the first DRX group) includes the time while another DRX group (e.g., the second DRX group) is active (if the DRX group is configured with PUSCH and / or PUCCH resources for CSI reporting of any serving cell in another DRX group). Thus, the UE performs CSI reporting based on the configured active times of the two or more DRX groups (750).

[0125] Step 750 can be carried out based on the embodiments described above, for example, the embodiments described with respect to Figures 1 to 6.

[0126] In a further embodiment, if two or more DRX groups are configured and one DRX group contains PUCCH and / or PUSCH resources for CSI reporting, the MAC entity of the UE will not report CSI on PUCCH and semi-persistent CSI configured on PUSCH for serving cells within the DRX group if the two or more DRX groups are not active at the time.

[0127] In a further embodiment, if two or more DRX groups are configured and one DRX group contains PUCCH and / or PUSCH resources for CSI reporting, the MAC entity of the UE will not report CSI on PUCCH and semi-persistent CSI configured on PUSCH in any DRX group if the CSI reporting resource for CSI reporting does not contain CSI reporting for serving cells in another DRX group of the two or more DRX groups.

[0128] In yet another embodiment, in the current symbol n, when another DRX group and DRX directive MAC CE / Long DRX directive MAC CE evaluate all DRX active time conditions, having received scheduling requests sent up to 4ms prior to symbol n and considering the scheduled authorizations / assignments for the serving cell, if another DRX group is not in active time, the UE does not report the CSI on the PUCCH and the semi-persistent CSI configured on the PUCCH in any DRX group.

[0129] In yet another embodiment, if CSI masking (csi-Mask) is set up by a higher layer, the UE does not report the CSI on the PUCCH of the current symbol n. If drx-onDurationTimer is running in a DRX group, it must be running in a DRX group that takes into account that the DRX group and the DRX command MAC CE / Long DRX command MAC CE are received up to 4ms before the symbol n when evaluating all configured DRX active time conditions.

[0130] Although the above example is explained in the context of an NR system, please understand that this method can be applied to other communication systems such as LTE systems.

[0131] Figure 8 shows an exemplary apparatus 800 for a CSI reporting procedure in one embodiment, which may be, for example, a UE in the example above.

[0132] As shown in Figure 8, the exemplary apparatus 800 may include at least one processor 810 and at least one memory 820 which can contain computer program code 830. The at least one memory 820 and the computer program code 830 may be configured to cause the apparatus 800 to use at least one of the exemplary methods 300 and / or exemplary method 400 described above to perform at least one of them using at least one processor 810.

[0133] In various exemplary embodiments, the at least one processor 810 in the exemplary device 800 may include, but is not limited to, at least one microprocessor, such as a central processing unit (CPU), part of at least one hardware processor, and any other suitable dedicated processor, such as one developed based on a field-programmable gate array (FPGA) and an application-specific integrated circuit (ASIC). Furthermore, the at least one processor 810 may also include at least one other circuit or element not shown in Figure 8.

[0134] In various exemplary embodiments, at least one memory 820 within the exemplary apparatus 800 may include at least one storage medium of various forms, such as volatile memory and / or non-volatile memory. Volatile memory may include, but is not limited to, random access memory (RAM) or cache. Non-volatile memory may include, but is not limited to, read-only memory (ROM), hard disk, or flash memory. Furthermore, at least memory 820 may include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any combination thereof.

[0135] Furthermore, in various exemplary embodiments, the exemplary apparatus 800 may also include at least one other circuit, element, and interface, such as at least one I / O interface, at least one antenna element, and so on.

[0136] Various exemplary embodiments include at least one processor 810 and at least one memory 820, and the circuits, components, elements, and interfaces within the exemplary device 800 may be coupled to one another in any suitable way, for example, electrically, magnetically, optically, electromagnetically, etc., via any suitable connections including buses, crossbars, wiring, and / or wireless lines.

[0137] It is understood that the structure of the UE-side device is not limited to the exemplary device 800 described above.

[0138] Figure 9 shows an exemplary apparatus 900 for a CSI reporting procedure in one embodiment, which could be, for example, a BS in the example above.

[0139] As shown in Figure 9, the exemplary apparatus 900 may include at least one processor 910 and at least one memory 920 which may contain computer program code 930. The at least one memory 920 and the computer program code 930 may be configured to cause the apparatus 900 to perform at least one of the exemplary methods 600 described above using at least one processor 910.

[0140] In various exemplary embodiments, the at least one processor 910 within the exemplary device 900 may include, but is not limited to, at least one hardware processor comprising at least one microprocessor such as a central processing unit (CPU), part of at least one hardware processor, and any other suitable dedicated processor, such as one developed based on a field-programmable gate array (FPGA) and an application-specific integrated circuit (ASIC). Furthermore, the at least one processor 910 may also include at least one other circuit or element not shown in Figure 9.

[0141] In various exemplary embodiments, at least one memory 920 within the exemplary apparatus 900 may include at least one storage medium of various forms, such as volatile memory and / or non-volatile memory. Volatile memory may include, but is not limited to, random access memory (RAM) or cache. Non-volatile memory may include, but is not limited to, read-only memory (ROM), hard disk, or flash memory. Furthermore, at least memory 920 may include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any combination thereof.

[0142] Furthermore, in various exemplary embodiments, the exemplary apparatus 900 may also include at least one other circuit, element, and interface, such as at least one I / O interface, at least one antenna element, and so on.

[0143] In various exemplary embodiments, circuits, components, elements, and interfaces within an exemplary device 900, including at least one processor 910 and at least one memory 920, may be coupled to one another in any suitable way, for example, electrically, magnetically, optically, electromagnetically, etc., via any suitable connections, including, but not limited to, buses, crossbars, wiring, and / or wireless lines.

[0144] It is understood that the structure of the base station equipment is not limited to the exemplary equipment 900 described above.

[0145] Figure 10 shows an exemplary apparatus 1000 for a CSI reporting procedure in one embodiment, which may be, for example, a UE in the example above.

[0146] As shown in Figure 10, the exemplary apparatus 1000 may include means 1010 for performing step 310 of the exemplary method 300, means 1020 for performing step 320 of the exemplary method 300, and means 1030 for performing step 330 of the exemplary method 300. In one or more other exemplary embodiments, at least one I / O interface, at least one antenna element, etc., may also be included in the exemplary apparatus 1000.

[0147] In some exemplary embodiments, an example of means in exemplary apparatus 1000 may include a circuit. For example, an example of means 1010 may include a circuit configured to perform step 310 of exemplary method 300, an example of means 1020 may include a circuit configured to perform step 320 of exemplary method 300, and an example of means 1030 may include a circuit configured to perform step 330 of exemplary method 300. In some exemplary embodiments, an example of means may also include a software module and any other preferred functional entity.

[0148] Throughout this disclosure, the term “circuit” may refer to one or more or all of the following: (a) Hardware-only circuit implementation (such as implementation in analog and / or digital circuits only), (b)(applicable) (i) combinations of analog and / or digital hardware circuits with software / firmware, and (ii) Any combination of software (including a digital signal processor), hardware processor, software, and memory that cooperate to cause a device such as a mobile phone or server to perform various functions, (c) refers to one or more microprocessors or hardware circuits and / or processors, such as parts of a microprocessor, that require software (e.g., firmware) for operation, but the software may not be present when it is not required for operation. This definition of circuit applies to any use of this term in the present disclosure, including any claim. Further examples include, as used in the present disclosure, the term circuit also encompasses not only a hardware circuit or processor (or more processors), but also a portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware implementation. The term circuit also includes, for example, a baseband integrated circuit or processor integrated circuit for a mobile device or similar integrated circuit in a server, cellular network device, or other computing or network device, where applicable to a claim element.

[0149] Figure 11 shows an exemplary apparatus 1100 for a CSI reporting procedure in one embodiment, which could be, for example, a BS in the example above.

[0150] As shown in Figure 11, the exemplary apparatus 1100 may include means 1110 for performing step 610 of the exemplary method 600, means 1120 for performing step 620 of the exemplary method 600, and means 1130 for performing step 630 of the exemplary method 600. In one or more other exemplary embodiments, at least one I / O interface, at least one antenna element, etc., may also be included in the exemplary apparatus 1100.

[0151] In some exemplary embodiments, an example of means in exemplary apparatus 1100 may include a circuit. For example, an example of means 1110 may include a circuit configured to perform step 610 of exemplary method 600, an example of means 1120 may include a circuit configured to perform step 620 of exemplary method 600, and an example of means 1130 may include a circuit configured to perform step 630 of exemplary method 600. In some exemplary embodiments, an example of means may also include a software module and any other preferred functional entity.

[0152] Throughout the drawings, identical or similar reference numbers indicate identical or similar elements. Note that redundant explanations for identical elements are omitted.

[0153] Another exemplary embodiment may relate to a computer-readable medium on which such computer program code or instructions are stored. In various exemplary embodiments, such computer-readable medium may include at least one storage medium of various forms, such as volatile memory and / or non-volatile memory. Volatile memory may include, but is not limited to, RAM, cache, etc. Non-volatile memory may include, but is not limited to, ROM, hard disk, flash memory, etc.

[0154] Unless otherwise explicitly required by the context, throughout this specification and the claims, the words “comprise,” “comprising,” etc., should be interpreted in a comprehensive sense, as opposed to an exclusive or exhaustive sense; that is, “including, but not limited to.” The word “coupled,” as commonly used herein, refers to two or more elements that can be directly connected or connected by one or more intermediate elements. Similarly, the term “connected,” as commonly used herein, refers to two or more elements that can be directly connected or connected by one or more intermediate elements. Furthermore, “in this specification,” “above,” “below,” and words with similar meanings, when used in this application, refer to the entire application and not to any particular part of this application. Where the context allows, words in descriptions using singular or plural may each include plural or singular. The word “or,” relating to a list of two or more items, encompasses all interpretations of the word, any of the items in the list, all of the items in the list, and any combination of the items in the list.

[0155] Furthermore, conditional language used herein, such as “can,” “could,” “may,” “may,” “for example,” and “etc.,” is generally intended to convey that other embodiments do not include certain features, elements, and / or states, but a particular embodiment does, unless otherwise specifically stated or understood in the context in which they are used. Accordingly, such conditional language is generally not intended to mean that features, elements, and / or states are required in any way in one or more embodiments, or that one or more embodiments necessarily include logic, with or without author input or prompting, to determine whether these features, elements, and / or states are included in or performed in any particular embodiment.

[0156] While several exemplary embodiments have been described, these embodiments are presented as examples only and are not intended to limit the scope of the disclosure. In fact, the apparatus, methods, and systems described herein may be implemented in various other forms, and furthermore, various omissions, substitutions, and modifications in the forms of methods and systems described herein may be implemented without departing from the spirit of this disclosure. For example, although a block is presented in a given configuration, Alternative embodiments may perform similar functions using different components and / or circuit topologies, and some blocks may be deleted, moved, added, subdivided, similarly, and / or modified. At least one of these blocks may be implemented in a variety of different ways. The order of these blocks may also be changed. Further embodiments can be provided by combining any suitable combination of elements and operations of the various embodiments described above. The appended claims and their equivalents are intended to encompass forms or modifications that fall within the scope and spirit of this disclosure.

Claims

1. Steps include receiving discontinuous reception (DRX) configuration information to configure multiple DRX groups, including a first DRX group having a first cell composed of channel status information (CSI) reporting resources, The steps include determining at least one DRX group from the plurality of DRX groups during the active time, The steps include reporting the CSI via the CSI reporting resource on the first cell based on the DRX configuration information and the active time, A method that includes this.

2. The method according to claim 1, wherein the active time of the first DRX group includes the active time of the at least one DRX group.

3. The method according to claim 1 or 2, wherein the CSI of one or more cells within the at least one DRX group is reported.

4. If the plurality of DRX groups further include a second DRX group having a second cell configured using a CSI reporting resource, and at least one of the DRX groups includes the first DRX group, then the CSI relating to one or more cells in the first DRX group is reported via the CSI reporting resource on the first cell. The method according to any one of claims 1 to 3, further comprising the step of reporting a CSI for one or more cells in the second DRX group via the CSI reporting resource on the second cell, when the at least one DRX group includes the second DRX group.

5. The method according to any one of claims 1 to 4, wherein if a CSI mask is configured, a CSI is reported if a DRX-on duration timer for at least one DRX group is running.

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

7. The method according to any one of claims 1 to 6, wherein the CSI of one or more cells during the active time is reported.

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

9. The steps include transmitting discontinuous receive (DRX) configuration information to configure multiple DRX groups, including a first DRX group having a first cell composed of a channel status information (CSI) reporting resource, The steps include determining at least one DRX group from the plurality of DRX groups during the active time, The steps include receiving CSI via the CSI reporting resource on the first cell based on the DRX configuration information and the active time, A method that includes this.

10. The method according to claim 9, wherein the active time of the first DRX group includes the active time of the at least one DRX group.

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

12. If the plurality of DRX groups further include a second DRX group having a second cell configured using a CSI reporting resource, and at least one of the DRX groups includes the first DRX group, then a CSI for one or more cells in the first DRX group is received via the CSI reporting resource on the first cell. The method according to any one of claims 9 to 11, further comprising the step of receiving a CSI for one or more cells in the second DRX group via the CSI reporting resource together with the second cell, when the at least one DRX group includes the second DRX group.

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

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

15. The method according to any one of claims 9 to 14, wherein a CSI is received for one or more cells during the active time.

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

17. A device comprising at least one processor and at least one memory containing computer program code, The at least one memory and the computer program code are used by the at least one processor to access the device. Steps include receiving discontinuous reception (DRX) configuration information to configure multiple DRX groups, including a first DRX group having a first cell composed of channel status information (CSI) reporting resources, The steps include determining at least one DRX group from the plurality of DRX groups during the active time, The steps include reporting the CSI on the first cell via the CSI reporting resource based on the DRX configuration information and the active time, A device configured to perform a certain action.

18. The apparatus according to claim 17, wherein the active time of the first DRX group includes the active time of at least one DRX group.

19. The apparatus according to claim 17 or 18, wherein the CSI of one or more cells in the at least one DRX group is reported.

20. If the plurality of DRX groups further include a second DRX group having a second cell configured using a CSI reporting resource, then the CSI relating to one or more cells in the first DRX group is reported via the CSI reporting resource on the first cell when the at least one DRX group includes the first DRX group. The at least one memory and the computer program code are configured to cause the device to perform the step of reporting CSI for one or more cells in the second DRX group via a second CSI reporting resource on the second cell, when the at least one DRX group includes the second DRX group. The apparatus according to any one of claims 17 to 19.

21. The apparatus according to any one of claims 17 to 20, wherein a CSI mask is configured and a DRX-on duration timer for at least one DRX group is running, the CSI is reported.

22. The apparatus according to any one of claims 17 to 21, wherein the first DRX group corresponds to the first timing advance group.

23. The apparatus according to any one of claims 17 to 22, wherein the CSI of one or more cells during the active time is reported.

24. The apparatus according to any one of claims 17 to 23, wherein the CSI of one or more activated cells is reported.

25. An apparatus comprising at least one processor and at least one computer program code, wherein the at least one memory and the computer program code use the at least one processor to provide the apparatus, The steps include sending discontinuous receive (DRX) configuration information to configure multiple DRX groups, including a first DRX group with a first cell composed of a channel status information (CSI) reporting resource, The steps include determining at least one DRX group from the plurality of DRX groups during the active time, The steps include receiving CSI on the first cell via the CSI reporting resource based on the DRX configuration information and the active time, A device configured to perform a certain action.

26. The apparatus according to claim 25, wherein the active time of the first DRX group includes the active time of at least one DRX group.

27. The apparatus according to claim 25 or 26, wherein a CSI is received for one or more cells in the at least one DRX group.

28. If the plurality of DRX groups further include a second DRX group having a second cell configured using a CSI reporting resource, then the CSI for one or more cells in the first DRX group is received via the CSI reporting resource on the first cell when at least one of the DRX groups includes the first DRX group. The at least one memory and the computer program code are configured to cause the device to perform the step of using the at least one processor to receive CSI for one or more cells in the second DRX group via the CSI reporting resource together with the second cell, when the at least one DRX group includes the second DRX group. The apparatus according to any one of claims 25 to 27.

29. The apparatus according to any one of claims 25 to 28, wherein if a CSI mask is configured, a CSI is received if a DRX-on duration timer for at least one DRX group is running.

30. The apparatus according to any one of claims 25 to 29, wherein the first DRX group corresponds to the first timing advance group.

31. The apparatus according to any one of claims 25 to 30, wherein a CSI for one or more cells during the active time is received.

32. The apparatus according to any one of claims 25 to 31, wherein a CSI is received for one or more activated cells.

33. Means for receiving discontinuous reception (DRX) configuration information to constitute multiple DRX groups, including a first DRX group having a first cell composed of channel status information (CSI) reporting resources, Means for determining at least one DRX group from the plurality of DRX groups during the active time, A means for reporting the CSI via the CSI reporting resource in the first cell, based on the DRX configuration information and the active time, A device that includes this.

34. Means for transmitting discontinuous receive (DRX) configuration information to constitute multiple DRX groups, including a first DRX group having a first cell composed of channel status information (CSI) reporting resources, Means for determining at least one DRX group from the plurality of DRX groups during the active time, Means for receiving CSI via the CSI reporting resource on the first cell based on the DRX configuration information and active time, A device that includes this.

35. In the device, Steps include receiving discontinuous reception (DRX) configuration information to configure multiple DRX groups, including a first DRX group having a first cell composed of channel status information (CSI) reporting resources, The steps include determining at least one DRX group from the plurality of DRX groups during the active time, The steps include reporting the CSI via the CSI reporting resource on the first cell based on the DRX configuration information and the active time, A computer-readable medium containing program instructions for executing a program.

36. In the device, The steps include transmitting discontinuous receive (DRX) configuration information for configuring a plurality of discontinuous receive (DRX) units, including a first DRX group having a first cell composed of channel status information (CSI) reporting resources, The steps include determining at least one DRX group from the plurality of DRX groups during the active time, A computer-readable medium containing program instructions for executing a program.

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