RELEASE AND MAINTENANCE OF SAPC CONFIGURATION EXECUTED

Description

1 / 52 RELEASE AND MAINTENANCE OF SAPC CONFIGURATION EXECUTED TECHNOLOGICAL FIELD

[0001] An exemplary embodiment refers, in general, to techniques for selective activation of primary cells from groups of secondary cells and, more particularly, to techniques for retaining a conditional change configuration of primary cells from groups of secondary cells. BACKGROUND

[0002] User equipment frequently travels across wide geographic areas. As user equipment moves, this can result in connection with a variety of primary cells or secondary cell groups that provide coverage. As user equipment switches between primary cells or secondary cell groups, it acquires a range of configurations associated with those primary cells or secondary cell groups. When one of these configurations is executed, user equipment will often retain the configuration of neighboring primary cells or secondary cell groups (PS Cell) in the event of future changes to primary cells or secondary cell groups. However, user equipment does not necessarily retain the configuration that was executed.This can result in delays if the user's equipment moves away from the primary cells of secondary cell groups and then moves back and has to be reconfigured.

[0003] In situations involving the deployment of dual connectivity of new radio with primary cells of secondary cell groups based on frequency range 2, user equipment is expected to have frequent mobility within primary cells of secondary cell groups. User equipment is also expected to have frequent mobility within primary cells of secondary cell groups for deployments of Petition 870250110697, dated 02 / 12 / 2025, page 8 / 68 2 / 52 Dual connectivity of new radio with secondary cell layers serving as capacity enhancers with densely deployed secondary cells. Not retaining configurations increases PSCell changeover delay. RAN4 defines PSCell changeover delay: user equipment must be able to transmit random access physical channel preamble towards the new target PSCell before slot n + Tconfig_PSCell_Conditional. Slot n is the last slot overlapping the downlink shared physical channel containing PSCell conditional changeover. Tconfig_PSCell_Conditional is determined by the equation Tconfig_PSCell_Conditional = TRRC_delay + TEvent_DU + Tmeasure + Tue_preparation + Tprocessing + Tδ + TPSCell_du + 2 ms. TRRC_delay is the radio resource control processing delay, which is the corresponding radio resource control message embedded in an evolved universal terrestrial radio access radio resource control message.Otherwise, it is the radio resource control delay for processing the PSCell conditional addition command. This value starts counting from when a master node transmits a conditional (re)configuration containing the CPC settings of the candidate target PSCell(s) to the user equipment. TEvent_DU is the delay uncertainty, or the time from when user equipment successfully decodes a PSCell conditional addition command until a condition exists at the measurement reference point, which will trigger the PSCell conditional addition. Tmeasure is determined as the measurement time delay defined from the end of TEvent_DU until the user equipment executes a PSCell change to a target cell and the interruption time begins.TUE_preparation is defined as the user equipment preparation time for conditional PSCell addition, and begins after the user equipment understands that the PSCell addition condition has been met and the PSCell's identity has been determined. This time period can be up to 10 ms. Tprocessing is defined as the SW processing time required for the user equipment, including the radio frequency warm-up period. This time period is 20 ms when... Petition 870250110697, dated 02 / 12 / 2025, page 9 / 68 3 / 52 PSCell is in frequency range 1, and is 40 ms when PSCell is in frequency range 2. Tδ is defined as the time for fine-tuned time tracking and acquisition of total timing information from the target cell. This is equal to 1*Trs ms. TPSCell_DU is defined as the delay uncertainty in acquiring the first available random access physical channel occasion in PSCell. This time can be up to the sum of the synchronization signal block to the random access physical channel occasion association period and 10 ms. Trs is defined as the SMTC periodicity of the target cell if the user equipment has been equipped with an SMTC configuration for the target cell in a PSCell add-on message. Otherwise, Trs is the SMTC configured in measObjectNR with the same SSB frequency and subcarrier spacing.If the user equipment is not equipped with an SMTC configuration or measurement object at that frequency, the requirement in this clause applies with Trs equal to 5 ms, assuming that the synchronization signal block transmission periodicity is 5 ms. If the synchronization signal block transmission periodicity is not 5 ms, there is no requirement.

[0004] The following procedure is used to support subsequent secondary cell group change. When the execution condition of a candidate PSCell for conditional PSCell change is met, user equipment performs the conditional PSCell change execution toward the candidate PSCell. After completing the PSCell addition or change, the user equipment retains the conditional configuration of other candidate PSCells for subsequent conditional PSCell change. The user equipment continues to evaluate the execution conditions of other candidate PSCells. When the execution condition of another candidate PSCell is met, the user equipment performs the conditional PSCell change execution toward the other candidate PSCell. Currently, it is assumed that if user equipment needed to be able to return to a current secondary cell group per conditional procedure, the Petition 870250110697, dated 02 / 12 / 2025, page 10 / 68 4 / 52 The network could explicitly configure a candidate configuration for that cell. In selective activation of a secondary cell, the PSCell conditional change or PSCell conditional addition configurations for the user equipment are released after the PSCell change for changes between master nodes by explicit indication from the network. R2 assumes that a PSCell conditional addition configuration can be used for PSCell conditional change with different trigger conditions. It is unclear whether the PSCell conditional change configuration is retained by the user equipment after the user equipment executes the configuration. BRIEF SUMMARY

[0005] A method, apparatus, and computer program product are disclosed for retaining configurations of a conditionally changed primary cell of a group of executed secondary cells. Embodiments described herein enable user equipment and a network to retain a configuration corresponding to an executed condition.

[0006] In an exemplary embodiment, a method is provided that includes receiving, by a user device of a master node, a reconfiguration message that includes a set of conditional change configurations for a primary cell of a secondary cell group, wherein the set of conditional change configurations for a primary cell of a secondary cell group includes a set of execution conditions. The method further includes evaluating the set of execution conditions. The method further includes, based on the evaluation of the set of execution conditions, executing one of the set of conditional change configurations for a primary cell of a secondary cell group. The method further includes receiving an indication of the executed conditional change configuration for a primary cell of a secondary cell group to be retained.The method additionally includes retaining the conditional change configuration of the primary cell of the secondary cell group that has been executed. Petition 870250110697, dated 02 / 12 / 2025, page 11 / 68 5 / 52

[0007] In an exemplary embodiment, the reconfiguration message includes the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained.

[0008] In an exemplary embodiment, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is received from a target secondary node in a second reconfiguration message after execution.

[0009] In an exemplary embodiment, the set of conditional change configurations of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group.

[0010] In one example, the indication includes a radio resource control message.

[0011] In an exemplary embodiment, the indication includes a MAC control element message.

[0012] In one example, the indication includes a downlink control information message.

[0013] The method of an exemplary embodiment additionally includes completing a random access procedure associated with the conditional change configuration of the primary cell to the secondary cell that is executed.

[0014] In an exemplary embodiment, the indication of the primary cell conditional change configuration of the secondary cell group executed to be retained includes an indication of one or more of the set of primary cell conditional change configurations of the secondary cell group not to be retained, and in which the set of primary cell conditional change configurations of the secondary cell group is retained except for one or more of the set of primary cell conditional change configurations of the secondary cell group.

[0015] In an exemplary embodiment, the reconfiguration message includes the indication of one or more of the change configuration set. Petition 870250110697, dated 02 / 12 / 2025, page 12 / 68 6 / 52 conditional primary cell group of secondary cells not to be retained.

[0016] In an exemplary embodiment, the indication of one or more of the set of conditional change configuration of primary cell of group of secondary cells not to be retained is received in a second reconfiguration message after execution.

[0017] In an exemplary embodiment, a method is provided that includes receiving, by a target secondary node, a secondary node addition request from a source master node. The method further includes determining a set of primary cells of secondary cells associated with a set of conditional change settings of primary cells of secondary cell groups. The method further includes transmitting an indication of an executed conditional change setting of primary cells of secondary cell groups from the set of conditional change settings of primary cells of secondary cell groups to be retained. The method further includes transmitting the set of conditional change settings of primary cells of secondary cell groups to the source master node.

[0018] In an exemplary embodiment, the indication of the executed conditional change configuration of the primary cell of the secondary cell group to be retained is transmitted to a source master node before the execution of the executed conditional change configuration of the primary cell of the secondary cell group.

[0019] In an exemplary embodiment, the indication is transmitted by the originating master node to a user device.

[0020] In an exemplary embodiment, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted to a user device after executing the conditional change configuration of the primary cell of the secondary cell group executed and during a connected period. Petition 870250110697, dated 02 / 12 / 2025, page 13 / 68 7 / 52

[0021] In an exemplary embodiment, the set of conditional change configurations of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group.

[0022] In an exemplary embodiment, the indication includes a radio resource control message.

[0023] In an exemplary embodiment, the indication includes a MAC control element message.

[0024] In an exemplary embodiment, the indication includes a downlink control information message.

[0025] In an exemplary embodiment, a method is provided that includes receiving, by a user device of a master node, a reconfiguration message that includes a set of conditional change configurations for a primary cell of a secondary cell group, wherein the set of conditional change configurations for a primary cell of a secondary cell group includes a set of execution conditions. The method further includes evaluating the set of execution conditions. The method further includes, based on the evaluation of the set of execution conditions, executing one of the set of conditional change configurations for a primary cell of a secondary cell group. The method further includes transmitting to another target secondary node an indication of the executed conditional change configuration for a primary cell of a secondary cell group to be retained.The method additionally includes retaining the conditional change configuration of the primary cell of the secondary cell group that has been executed.

[0026] In an exemplary embodiment, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted after execution during a connection period.

[0027] In an exemplary embodiment, the set of configurations of Petition 870250110697, dated 02 / 12 / 2025, page 14 / 68 8 / 52 conditional change of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group.

[0028] In one example, the indication includes a radio resource control message.

[0029] In an exemplary embodiment, the indication includes a MAC control element message.

[0030] In one example, the indication includes an uplink control information message.

[0031] The method of an exemplary embodiment additionally includes completing a random access procedure associated with the conditional change configuration of the primary cell of the secondary cell group executed.

[0032] In an exemplary embodiment, a non-transient computer-readable storage medium is provided including computer instructions that, when executed by an appliance, cause the appliance to at least receive from a user device of a master node, a reconfiguration message that includes a set of conditional change settings for primary cell to secondary cell group, wherein the set of conditional change settings for primary cell to secondary cell group includes a set of execution conditions. The non-transient computer-readable storage medium further includes computer instructions configured, upon execution, to evaluate the set of execution conditions.Non-transient computer-readable storage media additionally includes computer instructions configured, upon execution, to, based on the evaluation of the set of execution conditions, execute one of the set of conditional change configurations of a primary cell of a group of secondary cells. Non-transient computer-readable storage media additionally includes computer instructions configured, upon execution. Petition 870250110697, dated 02 / 12 / 2025, page 15 / 68 9 / 52 execution, to receive an indication of the executed conditional change configuration of the primary cell of the secondary cell group to be retained. The non-transient computer-readable storage medium additionally includes computer instructions configured, upon execution, to retain the executed conditional change configuration of the primary cell of the secondary cell group.

[0033] In an exemplary embodiment, the reconfiguration message includes the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained.

[0034] In an exemplary embodiment, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is received from a target secondary node in a second reconfiguration message after execution.

[0035] In an exemplary embodiment, the set of conditional change configurations of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group.

[0036] In one example, the indication includes a radio resource control message.

[0037] In an exemplary embodiment, the indication includes a MAC control element message.

[0038] In one example, the indication includes a downlink control information message.

[0039] In an exemplary embodiment, the non-transient computer-readable storage medium additionally includes computer instructions configured, upon execution, to complete a random access procedure associated with the executed conditional change configuration of a primary cell to a secondary cell.

[0040] In an exemplary embodiment, the indication of the conditional change configuration of a primary cell to a group of secondary cells Petition 870250110697, dated 02 / 12 / 2025, page 16 / 68 10 / 52 executed to be retained includes an indication of one or more of the primary cell conditional change settings set of secondary cell groups not to be retained, and in which the primary cell conditional change settings set of secondary cell groups is retained except for one or more of the primary cell conditional change settings set of secondary cell groups.

[0041] In an exemplary embodiment, the reconfiguration message includes the indication of one or more of the primary cell conditional change configuration set of secondary cells not to be retained.

[0042] In an exemplary embodiment, the indication of one or more of the set of conditional change configuration of primary cell of group of secondary cells not to be retained is received in a second reconfiguration message after execution.

[0043] In an exemplary embodiment, a non-transient computer-readable storage medium is provided including computer instructions that, when executed by an appliance, cause the appliance to receive, by a target secondary node, a secondary node addition request from a source master node. The non-transient computer-readable storage medium further includes computer instructions configured, upon execution, to determine a set of primary secondary cell-group associated with a set of conditional primary secondary cell-group change configurations.The non-transient computer-readable storage medium additionally includes configured computer instructions, upon execution, to transmit an indication of a conditional change configuration of a primary cell of a secondary cell group executed from the set of conditional change configurations of a primary cell of a secondary cell group to be retained. The non-transient computer-readable storage medium additionally includes configured computer instructions. Petition 870250110697, dated 02 / 12 / 2025, page 17 / 68 11 / 52 upon execution, to transmit the set of conditional change configurations from the primary cell group to the originating master node.

[0044] In an exemplary embodiment, the indication of the executed conditional change configuration of the primary cell of the secondary cell group to be retained is transmitted to a source master node before the execution of the executed conditional change configuration of the primary cell of the secondary cell group.

[0045] In an exemplary embodiment, the indication is transmitted by the originating master node to a user device.

[0046] In an exemplary embodiment, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted to a user device after executing the conditional change configuration of the primary cell of the secondary cell group executed and during a connected period.

[0047] In an exemplary embodiment, the set of conditional change configurations of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group.

[0048] In one example, the indication includes a radio resource control message.

[0049] In an exemplary embodiment, the indication includes a MAC control element message.

[0050] In one example, the indication includes a downlink control information message.

[0051] In an exemplary embodiment, a non-transient computer-readable storage medium is provided including computer instructions that, when executed by an appliance, cause the appliance to at least receive from a user device of a master node, a reconfiguration message that includes a set of configurations of Petition 870250110697, dated 02 / 12 / 2025, page 18 / 68 12 / 52 conditional change of primary cell to secondary cell group, wherein the set of configurations for the conditional change of primary cell to secondary cell group includes a set of execution conditions. The non-transient computer-readable storage medium additionally includes computer instructions configured, upon execution, to evaluate the set of execution conditions. The non-transient computer-readable storage medium additionally includes computer instructions configured, upon execution, to, based on the evaluation of the set of execution conditions, execute one of the set of configurations for the conditional change of primary cell to secondary cell group.The non-transient computer-readable storage medium additionally includes computer instructions configured, upon execution, to transmit to another target secondary node, an indication of the executed conditional change configuration of a primary cell of a secondary cell group to be retained. The non-transient computer-readable storage medium additionally includes computer instructions configured, upon execution, to retain the executed conditional change configuration of a primary cell of a secondary cell group.

[0052] In an exemplary embodiment, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted after execution during a connection period.

[0053] In an exemplary embodiment, the set of conditional change configurations of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group.

[0054] In an exemplary embodiment, the indication includes a radio resource control message.

[0055] In an exemplary embodiment, the indication includes a MAC control element message. Petition 870250110697, dated 02 / 12 / 2025, page 19 / 68 13 / 52

[0056] In an exemplary embodiment, the indication includes an uplink control information message.

[0057] In an exemplary embodiment, the non-transient computer-readable storage medium additionally includes computer instructions configured, upon execution, to complete a random access procedure associated with the configuration of a conditional change of a primary cell of a group of secondary cells that is executed.

[0058] In an exemplary embodiment, user equipment is provided that includes at least one processor and at least one memory including computer program code with the at least one memory and computer program code configured so that, with the at least one processor, the user equipment receives from a master node a reconfiguration message including a set of conditional change settings for primary cell group of secondary cells, wherein the set of conditional change settings for primary cell group of secondary cells includes a set of execution conditions. The at least one memory and computer program code are further configured so that, with the at least one processor, the user equipment evaluates the set of execution conditions.At least one memory and computer program code are further configured to, with at least one processor, make the user equipment, based on the evaluation of the set of execution conditions, execute one of the set of conditional change configurations of the primary cell of a secondary cell group. At least one memory and computer program code are further configured to, with at least one processor, make the user equipment receive an indication of the executed conditional change configuration of the primary cell of a secondary cell group to be retained. At least one memory and computer program code are further configured to, with at least one processor, make the equipment... Petition 870250110697, dated 02 / 12 / 2025, page 20 / 68 14 / 52 user retain the conditional change configuration of the primary cell of the secondary cell group that was executed.

[0059] In an exemplary embodiment, the reconfiguration message includes the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained.

[0060] In an exemplary embodiment, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is received from a target secondary node in a second reconfiguration message after execution.

[0061] In an exemplary embodiment, the set of conditional change configurations of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group.

[0062] In an exemplary embodiment, the indication includes a radio resource control message.

[0063] In an exemplary embodiment, the indication includes a MAC control element message.

[0064] In an exemplary embodiment, the indication comprises a downlink control information message.

[0065] In an exemplary embodiment, at least one memory and computer program code are further configured to, with at least one processor, enable the user equipment to complete a random access procedure associated with the conditional change configuration of primary secondary cell executed.

[0066] In an exemplary embodiment, the indication of the primary cell conditional change configuration of the secondary cell group executed to be retained includes an indication of one or more of the set of primary cell conditional change configurations of the secondary cell group not to be retained, and in which the set of primary cell conditional change configurations of the secondary cell group is retained. Petition 870250110697, dated 02 / 12 / 2025, page 21 / 68 15 / 52 secondary except for one or more of the set of conditional change configurations of the primary cell group of secondary cells.

[0067] In an exemplary embodiment, the reconfiguration message includes the indication of one or more of the primary cell conditional change configuration set of secondary cells not to be retained.

[0068] In an exemplary embodiment, the indication of one or more of the set of conditional change configuration of primary cell of group of secondary cells not to be retained is received in a second reconfiguration message after execution.

[0069] In an exemplary embodiment, a target secondary node is provided that includes at least one processor and at least one memory including computer program code with the at least one memory and the computer program code configured so that, with the at least one processor, the target secondary node receives a secondary node addition request from a source master node. The at least one memory and the computer program code are further configured so that, with the at least one processor, the secondary node determines a set of primary cells from secondary cell groups associated with a set of conditional primary cell to secondary cell group change configurations.At least one memory and computer program code are further configured to, with at least one processor, cause the secondary node to transmit an indication of a conditional change configuration of a primary cell of a secondary cell group executed from the set of conditional change configurations of a primary cell of a secondary cell group to be retained. At least one memory and computer program code are further configured to, with at least one processor, cause the secondary node to transmit the set of conditional change configurations of a primary cell of a secondary cell group to the originating master node. Petition 870250110697, dated 02 / 12 / 2025, page 22 / 68 16 / 52

[0070] In an exemplary embodiment, the indication of the executed primary cell conditional change configuration of the secondary cell group to be retained is transmitted to a source master node before the execution of the executed primary cell conditional change configuration of the secondary cell group.

[0071] In an exemplary embodiment, the indication is transmitted by the originating master node to a user device.

[0072] In an exemplary embodiment, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted to a user device after executing the conditional change configuration of the primary cell of the secondary cell group executed and during a connected period.

[0073] In an exemplary embodiment, the set of conditional change configurations of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group.

[0074] In one example, the indication includes a radio resource control message.

[0075] In an exemplary embodiment, the indication includes a MAC control element message.

[0076] In one example, the indication includes a downlink control information message.

[0077] In an exemplary embodiment, user equipment is provided that includes at least one processor and at least one memory including computer program code with the at least one memory and computer program code configured so that, with the at least one processor, the user equipment receives from a master node a reconfiguration message including a set of conditional change configurations of a primary cell group of secondary cells, wherein the set of conditional change configurations of Petition 870250110697, dated 02 / 12 / 2025, page 23 / 68 17 / 52 The primary cell of a secondary cell group includes a set of execution conditions. At least one memory and computer program code are additionally configured to, with at least one processor, make the user equipment evaluate the set of execution conditions. At least one memory and computer program code are additionally configured to, with at least one processor, make the user equipment, based on the evaluation of the set of execution conditions, execute one of the set of conditional change configurations of the primary cell of a secondary cell group. At least one memory and computer program code are additionally configured to, with at least one processor, make the user equipment transmit to another target secondary node an indication of the executed conditional change configuration of the primary cell of a secondary cell group to be retained.At least one memory and computer program code are additionally configured so that, with at least one processor, the user equipment retains the conditional change configuration of the primary cell to the group of secondary cells that is executed.

[0078] In an exemplary embodiment, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted after execution during a connection period.

[0079] In an exemplary embodiment, the set of conditional change configurations of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group.

[0080] In an exemplary embodiment, the indication includes a radio resource control message.

[0081] In an exemplary embodiment, the indication includes a MAC control element message. Petition 870250110697, dated 02 / 12 / 2025, page 24 / 68 18 / 52

[0082] In an exemplary embodiment, the indication includes an uplink control information message.

[0083] In an exemplary embodiment, at least one memory and computer program code are further configured to, with at least one processor, enable the user equipment to complete a random access procedure associated with the configuration of a conditional change of primary cell of a group of secondary cells executed.

[0084] In an exemplary embodiment, a user device is provided including means for receiving, from a master node, a reconfiguration message that includes a set of conditional change configurations for a primary cell of a secondary cell group, wherein the set of conditional change configurations for a primary cell of a secondary cell group includes a set of execution conditions. The user device further includes means for evaluating the set of execution conditions. The user device further includes means for, based on the evaluation of the set of execution conditions, executing one of the set of conditional change configurations for a primary cell of a secondary cell group. The user device further includes means for receiving an indication of the executed conditional change configuration for a primary cell of a secondary cell group to be retained.The user equipment additionally includes means to retain the conditional change configuration of the primary cell to the group of secondary cells that has been executed.

[0085] In an exemplary embodiment, the reconfiguration message includes the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained.

[0086] In an exemplary embodiment, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is received from a target secondary node in a second reconfiguration message after execution. Petition 870250110697, dated 02 / 12 / 2025, page 25 / 68 19 / 52

[0087] In an exemplary embodiment, the set of conditional change configurations of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group.

[0088] In one example, the indication includes a radio resource control message.

[0089] In an exemplary embodiment, the indication includes a MAC control element message.

[0090] In one example, the indication includes a downlink control information message.

[0091] The user equipment of an exemplary embodiment additionally includes means for completing a random access procedure associated with the configuration of a conditional change of primary cell to secondary cell performed.

[0092] In an exemplary embodiment, the indication of the primary cell conditional change configuration of the secondary cell group executed to be retained includes an indication of one or more of the set of primary cell conditional change configurations of the secondary cell group not to be retained, and in which the set of primary cell conditional change configurations of the secondary cell group is retained except for one or more of the set of primary cell conditional change configurations of the secondary cell group.

[0093] In an exemplary embodiment, the reconfiguration message includes the indication of one or more of the primary cell conditional change configuration set of secondary cells not to be retained.

[0094] In an exemplary embodiment, the indication of one or more of the set of conditional change configuration of primary cell of group of secondary cells not to be retained is received in a second reconfiguration message after execution. Petition 870250110697, dated 02 / 12 / 2025, page 26 / 68 20 / 52

[0095] In an exemplary embodiment, a target secondary node is provided including: means to receive a secondary node addition request from a source master node. The target secondary node additionally includes means to determine a set of primary cells of secondary cell groups associated with a set of primary cell conditional change settings of secondary cell groups. The secondary node additionally includes means to transmit an indication of a primary cell conditional change setting of secondary cell groups executed from the set of primary cell conditional change settings of secondary cell groups to be retained. The secondary node additionally includes means to transmit the set of primary cell conditional change settings of secondary cell groups to the source master node.

[0096] In an exemplary embodiment, the indication of the executed primary cell conditional change configuration of the secondary cell group to be retained is transmitted to a source master node before the execution of the executed primary cell conditional change configuration of the secondary cell group.

[0097] In an exemplary embodiment, the indication is transmitted by the originating master node to a user device.

[0098] In an exemplary embodiment, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted to a user device after executing the conditional change configuration of the primary cell of the secondary cell group executed and during a connected period.

[0099] In an exemplary embodiment, the set of conditional change configurations of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group.

[0100] In an exemplary manner, the indication includes a Petition 870250110697, dated 02 / 12 / 2025, page 27 / 68 21 / 52 radio resource control message.

[0101] In an exemplary embodiment, the indication includes a MAC control element message.

[0102] In an exemplary embodiment, the indication includes a downlink control information message.

[0103] In an exemplary embodiment, a user device is provided including means for receiving, from a master node, a reconfiguration message that includes a set of conditional change configurations for a primary cell of a secondary cell group, wherein the set of conditional change configurations for a primary cell of a secondary cell group includes a set of execution conditions. The user device further includes means for evaluating the set of execution conditions. The user device further includes means for, based on the evaluation of the set of execution conditions, executing one of the set of conditional change configurations for a primary cell of a secondary cell group. The user device further includes means for transmitting to another target secondary node an indication of the executed conditional change configuration for a primary cell of a secondary cell group to be retained.The user equipment additionally includes means to retain the conditional change configuration of the primary cell to the group of secondary cells that has been executed.

[0104] In an exemplary embodiment, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted after execution during a connection period.

[0105] In an exemplary embodiment, the set of conditional change configurations of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group.

[0106] In an exemplary manner, the indication includes a Petition 870250110697, dated 02 / 12 / 2025, page 28 / 68 22 / 52 radio resource control message.

[0107] In an exemplary embodiment, the indication includes a MAC control element message.

[0108] In an exemplary embodiment, the indication includes an uplink control information message.

[0109] The user equipment of an exemplary embodiment additionally includes means for completing a random access procedure associated with the configuration of a conditional change of the primary cell of a group of secondary cells performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0110] Having described, then, certain exemplary embodiments of the present disclosure in general terms, reference will henceforth be made to the accompanying drawings, which are not necessarily drawn to scale and in which:

[0111] Figure 1 is a block diagram of a system including both a base station and a user device configured to communicate via at least uplink and downlink transmission according to an exemplary embodiment of the present disclosure;

[0112] Figure 2 is a block diagram of an exemplary communication system in which the system of Figure 1 can be deployed according to an exemplary embodiment of the present disclosure;

[0113] Figure 3 is a flowchart demonstrating conditional change of primary cells to secondary cell groups between origin nodes initiated by origin nodes according to previous modalities;

[0114] Figure 4 is an illustration depicting a change from primary cell to secondary cell group when user equipment is configured with selective activation of CP AC according to previous modalities;

[0115] Figure 5 is an illustration of a problem with change. Petition 870250110697, dated 02 / 12 / 2025, page 29 / 68 23 / 52 conditional primary cell group of secondary cells according to previous modalities;

[0116] Figure 6 is a flowchart demonstrating an example in which the user equipment receives an indication to retain a conditional change configuration of a primary cell group of secondary cells executed before execution in accordance with an exemplary embodiment of the present disclosure;

[0117] Figure 7 is a flowchart demonstrating an example in which the user equipment receives an indication to retain a conditional change configuration of a primary cell group of secondary cells executed after execution in accordance with an exemplary embodiment of the present disclosure;

[0118] Figure 8 is a flowchart demonstrating an example in which the user equipment causes the transmission of an indication to retain a conditional change configuration of a primary cell of a secondary cell group executed after execution in accordance with an exemplary embodiment of the present disclosure;

[0119] Figure 9 is a flowchart demonstrating the operations performed, as by the apparatus of Figure 2, in order to retain a conditional change configuration of a primary cell to a group of secondary cells executed according to an exemplary embodiment of the present disclosure;

[0120] Figure 10 is a flowchart demonstrating the operations performed, as by the apparatus in Figure 2, in order to transmit a set of conditional change configurations from primary cell to secondary cell group according to an exemplary embodiment of the present disclosure;

[0121] Figure 11 is a flowchart demonstrating alternative operations, such as by the apparatus of Figure 2, in order to retain a conditional change configuration of primary cell to secondary cell group executed according to an exemplary embodiment of the present disclosure; Petition 870250110697, dated 02 / 12 / 2025, page 30 / 68 24 / 52 DETAILED DESCRIPTION

[0122] Some embodiments of the present disclosure will now be described more fully hereafter with reference to the accompanying drawings, in which all, but not all, embodiments are shown. In fact, various embodiments may be embodied in many different forms and should not be interpreted as limited to the embodiments set forth in this document; rather, these embodiments are provided so that this disclosure satisfies applicable legal requirements. Similar reference numerals refer to similar elements throughout the document. As used in this document, the terms “data,” “content,” “information,” and similar terms may be used interchangeably to refer to data capable of being transmitted, received, and / or stored in accordance with embodiments of the present disclosure. Therefore, the use of any such terms is not to be understood as limiting the spirit and scope of embodiments of the present disclosure.

[0123] Additionally, as used in this document, the term “circuit assembly” refers to (a) hardware circuit implementations only (e.g., analog circuit assembly implementations and / or digital circuit assemblies); (b) combinations of circuits and computer program product(s) that include software instructions and / or firmware stored in one or more computer-readable memories that work together to make an apparatus perform one or more functions described in this document; and (c) circuits, such as a microprocessor(s) or a portion of a microprocessor(s), that require software or firmware for operation even if the software or firmware is not physically present. This definition of “circuit assembly” applies to all uses of this term in this document, including in any claims.As a further example, as used in this document, the term "circuit set" also includes an implementation that includes one or more processors and / or portion(s) thereof and software. Petition 870250110697, dated 02 / 12 / 2025, page 31 / 68 25 / 52 and / or associated firmware. As another example, the term “circuit assembly” as used herein also includes, for example, a baseband integrated circuit or application processor integrated circuit for a mobile phone or a similar integrated circuit in a server, a cellular network device, another network device (such as a core network appliance), a field programmable port array and / or other computing device.

[0124] As used in this document, the term “computer-readable medium” refers to non-transient storage hardware, non-transient storage device, or non-transient computer system memory that can be accessed by a controller, microcontroller, computer system, or module of a computer system for software programs or executable computer instructions encoded therein. A non-transient “computer-readable medium” can be accessed by a computer system or module of a computer system to retrieve and / or execute software programs or executable computer instructions encoded therein.Examples of non-transient computer-readable media may include, but are not limited to, one or more types of hardware memory, non-transient tangible media (for example, one or more magnetic storage disks, one or more optical disks, one or more Universal Synchronous Bus (USB) flash drives), computer system memory or random access memory (such as dynamic random access memory (DRAM), static random access memory (SRAM), extended data output random access memory (EDO RAM), and the like).

[0125] As illustrated in Figure 1, a system 100 is provided according to an exemplary embodiment to facilitate uplink transmission of user equipment 120. Although the system can be configured in various ways, the one-embodiment system is depicted in Figure 1 and includes both user equipment 120 and base station 140. Petition 870250110697, dated 02 / 12 / 2025, page 32 / 68 26 / 52 configured to communicate via uplink and downlink transmission and receive beams. Although a user device and a base station are depicted, the system may include 120 user devices and / or 140 base stations that can communicate with additional user devices and base stations in other modes. In one or more modes, the 120 user devices and 140 base stations may be configured to support, for example, 5G, advanced 5G, or 6G. In one or more modes, the 100 system may support carrier aggregation and / or dual connectivity. As described below, the system is configured to transmit messages and reports, such as reconfiguration messages, radio resource control messages, MAC control element messages, downlink control information messages, and / or similar messages.

[0126] The data that is transmitted via the uplink and downlink beams between the user equipment 120 and the base station 140 can be any of a wide variety of data, including, but not limited to, image data, including video data, audio data, as well as data provided by sensors, radars, telescopes and radio receivers. In at least some instances, the data is encoded before communication of the data via the uplink and downlink beams and decoded after reception.The resulting data received can be used for a variety of purposes, including presentation to a user, storage of the data for subsequent use, and / or provision of the data to one or more applications, such as applications that perform statistical inference on the data for various purposes, including object recognition, image classification, spectrum capture, speech transcription, and / or event prediction or detection.

[0127] User equipment 120 in Figure 1 (also called UE, user device, user terminal, terminal device, etc.) illustrated a type of device whose resources on an air interface are allocated and Petition 870250110697, dated 02 / 12 / 2025, page 33 / 68 27 / 52 assigned. User equipment 120 typically refers to a portable computing device that includes wireless mobile communication devices that operate with or without a subscriber identification module (SIM), including, but not limited to, the following types of devices: a mobile station (mobile phone), smartphone, personal digital assistant (PDA), handheld phone, device using a wireless modem (measuring or alarm device, etc.), laptop and / or touchscreen computer, tablet, game console, notebook, and multimedia device. User equipment 120 may also be a device that has the capability to operate on the Internet of Things (IoT) network, which is a scenario in which objects are endowed with the ability to transfer data across a network without the need for human-to-human or human-to-computer interaction.User equipment 120 (or, in some embodiments, a Layer 3 relay node) is configured to perform one or more user equipment functions. User equipment 120 may also be called a subscriber unit, mobile station, remote terminal, access terminal, user terminal, or user equipment (UE), to mention just a few names or devices.

[0128] Base station 140 in Figure 1 may include, for example, remote radio heads (RRHs), transmit / receive points (TRPs), access points, Bs nodes (e.g., gNB) or other transmission sources. Base station 140 may be configured to communicate with user equipment 120 via a network.

[0129] Base station 140 can operate as part of a cell group. Base station 140 can be part of a master cell group (MCG) or a secondary cell group (SCG). In one or more modes, base station 140 can operate as a primary cell in the MCG or SCG. In one or more modes, base station 140 can operate as a secondary cell in the MCG or SCG. In one or more alternative modes, equipment of Petition 870250110697, dated 02 / 12 / 2025, p. 34 / 68 28 / 52 User 120 may change locations, requiring a new MCG or SCG. In one or more modes, User 120 equipment may utilize selective SCG activation or selective MCG activation. In one or more modes, mobile User 120 equipment cells may result in the change of the previous source PSCell to a target PSCell with conditional PSCell change. In one or more modes, PSCell add / change settings configured for selective activation are retained on both the User equipment and network sides.

[0130] Figure 2 depicts an exemplary device 200 that can be configured to function as a user device 120 or a base station 140. As shown in Figure 2, the device includes, is associated with, or is in communication with a processing circuitry 220, a memory 240, and a communication interface 260. The processing circuitry 220 may be in communication with the memory device 240 via a bus to pass information between components of the device. The memory device may be non-transient and may include, for example, one or more volatile and / or non-volatile memories.In other words, for example, the memory device may be an electronic storage device (e.g., a computer-readable storage medium) that includes ports configured to store data (e.g., bits) that can be retrieved by a machine (e.g., a computing device such as the processing circuitry). The memory device may be configured to store information, data, content, applications, instructions, or the like to enable the device to perform various functions according to an exemplary embodiment of the present disclosure. For example, the memory device could be configured to buffer input data for processing by the processing circuitry. Additionally or alternatively, the memory device could be configured to store instructions for execution by the processing circuitry. Petition 870250110697, dated 02 / 12 / 2025, pages 35 / 68 29 / 52

[0131] The device 200 may, in some embodiments, be incorporated into various computing devices described above. However, in some embodiments, the device may be incorporated as a chip or set of chips. In other words, the device may include one or more physical packages (e.g., chips) including materials, components, and / or wires in a structural assembly (e.g., a baseboard). The structural assembly may provide physical strength, size conservation, and / or electrical interaction limitation for the component circuitry assembly included therein. The device may, therefore, in some cases, be configured to implement an embodiment on a single chip or as a single “system on a chip.” Thus, in some cases, a chip or set of chips may constitute means for performing one or more operations to provide the functionalities described herein.

[0132] The processing circuitry 220, also referred to as a processor, can be incorporated in several different ways. For example, the processing circuitry can be incorporated as one or more of several hardware processing means, such as a processor, coprocessor, microprocessor, controller, digital signal processor (DSP), processing element with or without an associated DSP, or various other circuitry assemblies, including integrated circuits such as, for example, an ASIC (application-specific integrated circuit), an FPGA (field-programmable gate array), a microcontroller unit (MCU), a hardware accelerator, a special-purpose computer chip, or the like. Thus, in some embodiments, the processing circuitry may include one or more processing cores configured to operate independently.A set of multi-core processing circuits can enable multiprocessing in a single physical package. Alternatively, the processing circuit set may include one or more processors configured in tandem via the bus. Petition 870250110697, dated 02 / 12 / 2025, pp. 36 / 68 30 / 52 enable independent instruction execution, pipeline execution, and / or multithreading.

[0133] In an exemplary embodiment, the processing circuitry 220 may be configured to execute instructions stored in memory device 240 or otherwise accessible to the processing circuitry. Alternatively or additionally, the processing circuitry may be configured to execute embedded code functionality. Thus, whether configured by hardware or software methods, or a combination thereof, the processing circuitry may represent an entity (e.g., physically embodied in the circuitry) capable of performing operations according to an embodiment of the present disclosure while configured accordingly. So, for example, when the processing circuitry is embodied as an ASIC, FPGA, or similar, the processing circuitry may be hardware specifically configured to conduct the operations described herein.Alternatively, as another example, when the processing circuitry is incorporated as an instruction executor, the instructions may specifically configure the processor to perform the algorithms and / or operations described herein when the instructions are executed. However, in some cases, the processing circuitry may be a processor of a specific device (e.g., an image or video processing system) configured to employ a mode by further configuring the processing circuitry through instructions to perform the algorithms and / or operations described herein. The processing circuitry may include, among other things, a clock, an arithmetic logic unit (ALU), and logic gates configured to support the operation of the processing circuitry.

[0134] The 260 communication interface can be any media such as a Petition 870250110697, dated 02 / 12 / 2025, pp. 37 / 68 31 / 52 A device or set of circuits incorporated in hardware, or a combination of hardware and software, that is configured to receive and / or transmit data, including media content in the form of video or image files, one or more audio tracks, or similar. In this sense, the communication interface may include, for example, an antenna (or multiple antennas) and supporting hardware and / or software to enable communications with a wireless communication network. Additionally or alternatively, the communication interface may include the set of circuits to interact with the antenna(s) to cause signal transmission via the antenna(s) or to manage the reception of signals received via the antenna(s). In some environments, the communication interface may alternatively or also support wired communication.Thus, for example, the communication interface may include a communication modem and / or other hardware / software to support communication via cable, digital subscriber line (DSL), Universal Serial Bus (USB), or other mechanisms.

[0135] Referring now to Figure 3, a signaling diagram illustrates a process 300 for conditional PSCell switching (CPC) between source nodes initiated by source nodes according to previous methods. In this exemplary embodiment, user equipment 120 is connected to a source master node 380 and a source secondary node 385 and uses selective activation to switch to a target secondary node 390 among other potential target secondary nodes 395.

[0136] In one or more modes, in operation 305, the originating secondary node 385 indicates to the master node that a change of originating secondary node is required. In one or more modes, the originating secondary node 385 transmits to the master node a list of IDs of target secondary nodes that will be contacted to prepare target PSCell(s). In one or more modes, the originating secondary node suggests a list of PSCells to be prepared by the target secondary nodes. In one or more modes, the originating secondary node provides a CPC execution condition for each Petition 870250110697, dated 02 / 12 / 2025, pp. 38 / 68 32 / 52 Suggested target PCell.

[0137] In one or more modes, in operation 310, master node 380 transmits an add request to target secondary node 390. In one or more modes, master node 380 transmits the add request from secondary node to target secondary node 390 in response to the inclusion of target secondary node 390 in the list of target secondary nodes transmitted in operation 305.

[0138] In one or more modes, in operation 315, master node 380 transmits add requests to other target secondary nodes 395. In one or more modes, master node 380 transmits the add request for a secondary node to other target secondary nodes 395 in response to the inclusion of target secondary node 395 in the list of target secondary nodes transmitted in operation 305.

[0139] In one or more modes, in operation 320, the secondary target node 390 decides on the candidate target PSCell(s) to prepare from the list of PSCells that were suggested by the secondary origin node 385 to be prepared.

[0140] In one or more modes, in operation 325, the other target secondary nodes 395 decide on the candidate target PSCell(s) to prepare from the list of PSCells that were suggested by the originating secondary node 385 to be prepared.

[0141] In one or more modes, in operation 330, the secondary target node 390 transmits the CPC configuration for each target PSCell prepared for the master node 380. In one or more modes, in operation 330, the secondary target node 390 transmits the ID of each target PSCell prepared for the master node 380.

[0142] In one or more modes, in operation 335, the other secondary target nodes 395 transmit the CPC configuration for each target PSCell prepared for the master node 380. In one or more modes, in operation 335, the other secondary target nodes 395 transmit the ID of each Petition 870250110697, dated 02 / 12 / 2025, pp. 39 / 68 33 / 52 PSCell target prepared for master node 380.

[0143] In one or more modes, in operation 340, master node 380 transmits a conditional (re)configuration containing the CPC settings of the candidate target PSCell(s) to user equipment 120. In one or more modes, in operation 340, master node 380 transmits CPC execution conditions corresponding to the transmitted CPC settings of the candidate target PSCell(s) to user equipment 120.

[0144] In one or more modes, in operation 345, the user equipment transmits a confirmation to the master node 380 that the user equipment 120 has received the conditional (re)configuration.

[0145] In one or more modes, in operation 350, master node 380 transmits a confirmation to secondary node of origin 385 that user equipment 120 has received the (re)configuration. In one or more modes, master node 380 confirms preparation for change from secondary node to secondary node of origin 385.

[0146] In one or more modes, in operation 355, user equipment 120 evaluates the CPC execution conditions corresponding to the CPC configurations transmitted from the target candidate PSCell(s). In one or more modes, in operation 355, user equipment 120 evaluates the CPC execution conditions of the prepared target PSCell(s).

[0147] In one or more modes, in the 360 ​​operation, a CPC execution condition is satisfied for a target candidate PSCell. In one or more modes, in the 360 ​​operation, a CPC execution condition is satisfied for a target candidate PSCell on a secondary target node 390. In one or more modes, the CPC execution condition includes a CP(A)C execution condition. In one or more modes, the CPC configuration is executed.

[0148] In one or more modes, in operation 365, user equipment 120 transmits a message to master node 380 indicating the execution of the CPC configuration. In one or more modes, the Petition 870250110697, dated 02 / 12 / 2025, pp. 40 / 68 Message 34 / 52 includes a complete secondary node radio resource control reconfiguration embedded for the target source node corresponding to the executed CPC configuration. In one or more modes, the complete radio resource control reconfiguration is for target source node 390.

[0149] In one or more modes, in operation 370, master node 380 transmits the complete radio resource control reconfiguration from secondary node to target source node corresponding to the executed CPC configuration. In one or more modes, the complete radio resource control reconfiguration is for target source node 390.

[0150] In one or more modes, in operation 375, user equipment 320 completes a random access procedure to target source node 390.

[0151] Referring now to Figure 4, a situation 400 for selective activation of SCG is illustrated. As illustrated in Figure 4, user equipment 120 is mobile through a group of PSCells under the overlapping cover of a new primary radio cell 410.

[0152] In one or more modes, user equipment is served by primary cell 410 and PSCell 420 (Pscell 2). In one or more modes, user equipment 120 is configured with selective activation of CP AC for target PSCells 430 and 440 (Pscell 3 and Pscell 4). In one or more modes, as user equipment moves toward PSCell 430, the CPC configuration for target PSCell 430 will be executed when the execution condition associated with PSCell 430 is met. In one or more modes, after execution, user equipment 120 retains the CPC configuration for PSCell 440 in case of a subsequent PSCell change. However, in previous versions, user equipment 120 does not necessarily retain the CPC configuration for PSCell 430. This can be technically disadvantageous in a situation where there is a subsequent change of PSCell away from PSCell 430 and subsequently Petition 870250110697, dated 02 / 12 / 2025, p. 41 / 68 35 / 52 back to PSCell 430.

[0153] Referring now to Figure 5, a situation 500 is illustrated in which it is not clear which previous modes retain PSCell configuration. In this situation, in previous embodiments, user equipment receives CPC configurations for PSCell 420, PSCell 430, and PSCell 440. In one or more previous embodiments, user equipment executes the CPC configuration for PSCell 420 and maintains the CPC configurations for PSCell 430 and PSCell 440. However, user equipment 120 can then release the CPC configuration for PSCell 420. In one or more previous embodiments, if user equipment 120 exits and subsequently returns to PSCell 420, then PSCell 420 will need to provide an “autoconfiguration,” where the autoconfiguration is the PSCell 420 CPC configuration that can be used by the user equipment to switch back to a service PSCell after a PSCell change.In one or more of the previous modes, this unnecessary autoconfiguration preparation will be the same as the configuration that the user equipment 120 originally performed for PSCell 420. The failure to retain this configuration by the user equipment 120 causes unnecessary delay, and the autoconfiguration preparation can waste system resources.

[0154] Referring now to Figure 6, a signaling diagram illustrates a 600 process for conditional PSCell (CPC) change between source nodes initiated by source nodes according to an exemplary embodiment in which the executed CPC configuration is retained. In this exemplary embodiment, user equipment 120 is connected to a source master node 380 and a source secondary node 385, and changes to a PSCell connected to target secondary node 390 or target secondary node 395. In this exemplary embodiment, user equipment 120 changes to PSCell 1-1 associated with secondary node 390, however, in other embodiments, user equipment may change to PSCell 2-1 or PSCell 2-2 associated with target secondary node 395. Petition 870250110697, dated 02 / 12 / 2025, p. 42 / 68 36 / 52

[0155] In one or more modes, in operation 305, the source secondary node 385 indicates to the master node 380 that a change of source secondary node is required. In one or more modes, the source secondary node 385 transmits to the master node 380 a list of IDs of target secondary nodes that will be contacted to prepare target PSCell(s). In one or more modes, the source secondary node 385 suggests a list of PSCells to be prepared by the target secondary nodes. In one or more modes, the source secondary node provides a CPC execution condition for each suggested target PCell.

[0156] In one or more modes, in operation 310, master node 380 transmits an add request to target secondary node 390. In one or more modes, master node 380 transmits the add request from secondary node to target secondary node 390 in response to the inclusion of target secondary node 390 in the list of target secondary nodes transmitted in operation 305.

[0157] In one or more modes, in operation 610, the secondary target node 390 sets a flag indicating to maintain the CPC settings for the prepared target PSCell 1-1 if that setting is executed. In one or more modes, the flag is indicated to the source master node 380 so that the source master node 380 configures the user equipment 120 to store and maintain the PCell change setting to be executed. In one or more modes, the secondary target node 390 determines the target candidate PSCell to be prepared. In one or more modes, the secondary target node 390 determines the preparation of PSCell 1-1.

[0158] In one or more modes, in operation 315, master node 380 transmits add requests to target secondary node 395. In one or more modes, master node 380 transmits the add request from secondary node to target secondary node 395 in response to the inclusion of target secondary node 395 in the list of target secondary nodes transmitted in operation 305.

[0159] In one or more modes, in operation 615, the secondary target node Petition 870250110697, dated 02 / 12 / 2025, pp. 43 / 68 37 / 52 395 establishes a flag indicating to maintain the CPC settings for prepared PSCells 2-1 and 2-2 if those settings are executed. In one or more modes, the flag is indicated to the source master node 380 so that the source master node 380 configures the user equipment 120 to store and maintain the PCell change setting(s) to be executed. In one or more modes, the target secondary node 390 determines the target candidate PSCells to be prepared. In one or more modes, the target secondary node 390 determines the preparation of PSCell 2-1 and PSCell 2-2.

[0160] In one or more modes, in operation 620, the originating master node 380 transmits a modification request from the originating node to the target secondary node 390.

[0161] In one or more modes, in operation 625, the secondary target node 390 transmits the CPC configuration to the target PSCell 1-1 prepared for the master node 380. In one or more modes, in operation 330, the secondary target node 390 transmits the ID of the target PSCell 1-1 prepared for the master node 380.

[0162] In one or more modes, in operation 630, the originating master node 380 transmits a modification request from the originating node to the target secondary node 395.

[0163] In one or more modes, in operation 635, the secondary target node 395 transmits the CPC configuration for each target PSCell 2-1 and 2-2 prepared to the master node 380. In one or more modes, in operation 335, the other secondary target nodes 395 transmit the ID of each target PSCell prepared to the master node 380.

[0164] In one or more modes, in operation 640, master node 380 transmits a conditional (re)configuration containing the CPC settings of the candidate target PSCell(s) to user equipment 120. In one or more modes, in operation 640, master node 380 transmits CPC execution conditions corresponding to the transmitted CPC settings. Petition 870250110697, dated 02 / 12 / 2025, pp. 44 / 68 38 / 52 of the candidate target PSCell(s) for user equipment 120. In one or more modes, master node 380 transmits the flag to maintain a PSCell configuration after execution. In one or more modes, the flag is indicated to the user equipment for each configuration provided by master node 380.

[0165] In one or more modes, in operation 345, the user equipment transmits a confirmation to the master node 380 that the user equipment 120 has received the conditional (re)configuration.

[0166] In one or more modes, in the 360 ​​operation, a CPC execution condition is met for PSCell 1-1 on secondary node 390. In one or more modes, in the 360 ​​operation, a CPC execution condition is met for PSCell 1-1 on target secondary node 390. In one or more modes, the CPC execution condition includes a CP(A)C execution condition. In one or more modes, the CPC configuration is executed. In one or more modes, user equipment executes CPC towards secondary node 390.

[0167] In one or more modes, in operation 365, user equipment 120 transmits a message to master node 380 indicating the execution of the CPC configuration. In one or more modes, the message includes a complete secondary node radio resource control reconfiguration embedded for the target source node corresponding to the executed CPC configuration. In one or more modes, the complete radio resource control reconfiguration is for target source node 390.

[0168] In one or more modes, in operation 645, the user equipment retains the CPC configuration for the new PSCell 1-1 service cell. In one or more modes, the configuration is retained as an autoconfiguration. In one or more modes, the configuration is retained as indicated from the radio resource control configuration.

[0169] In one or more modes, in operation 350, the master node 380 Petition 870250110697, dated 02 / 12 / 2025, pages 45 / 68 39 / 52 transmits a confirmation to secondary node 385 that user equipment 120 has received the (re)configuration. In one or more modes, master node 380 confirms preparation for change from secondary node to secondary node 385. In one or more modes, master node 380 transmits the complete radio resource control reconfiguration from secondary node to secondary node 385.

[0170] In one or more modes, in operation 370, master node 380 transmits the complete radio resource control reconfiguration from secondary node to the target secondary node corresponding to the executed CPC configuration. In one or more modes, the complete radio resource control reconfiguration is for target secondary node 390. In one or more modes, master node 380 transmits a confirmation to target secondary node 390 that user equipment 120 has received the (re)configuration. In one or more modes, master node 380 confirms preparation for change from secondary node to source secondary node 390.

[0171] In one or more modes, in operation 375, user equipment 320 completes a random access procedure to target source node 390.

[0172] In one or more modes, in operation 650, a user plan procedure is completed.

[0173] In one or more modes, in operation 655, a user equipment context release is delivered from master node 380 to secondary source node 385.

[0174] Referring now to Figure 7, the signaling diagram illustrates an alternative process 700 for conditional PSCell change (CPC) between source node initiated by source node according to an exemplary embodiment in which the executed CPC configuration is retained. In this exemplary embodiment, user equipment 120 is connected to a source master node 380 and a source secondary node 385, and changes to a PSCell connected to target secondary node 390 or target secondary node 395. Petition 870250110697, dated 02 / 12 / 2025, pp. 46 / 68 40 / 52 In this example, user equipment 120 changes to PSCell 1-1 associated with secondary node 390; however, in other modes, user equipment may change to PSCell 2-1 or PSCell 2-2 associated with target secondary node 395.

[0175] In one or more modes, in operation 305, the source secondary node 385 indicates to the master node 380 that a change of source secondary node is required. In one or more modes, the source secondary node 385 transmits to the master node 380 a list of IDs of target secondary nodes that will be contacted to prepare target PSCell(s). In one or more modes, the source secondary node 385 suggests a list of PSCells to be prepared by the target secondary nodes. In one or more modes, the source secondary node provides a CPC execution condition for each suggested target PCell.

[0176] In one or more modes, in operation 310, master node 380 transmits an add request to target secondary node 390. In one or more modes, master node 380 transmits the add request from secondary node to target secondary node 390 in response to the inclusion of target secondary node 390 in the list of target secondary nodes transmitted in operation 305.

[0177] In one or more modes, in operation 710, secondary target node 390 determines the target candidate PSCell to be prepared. In one or more modes, secondary target node 390 determines the preparation of PSCell 1 -1.

[0178] In one or more modes, in operation 315, master node 380 transmits add requests to target secondary node 395. In one or more modes, master node 380 transmits the add request from secondary node to target secondary node 395 in response to the inclusion of target secondary node 395 in the list of target secondary nodes transmitted in operation 305.

[0179] In one or more modes, in operation 715, secondary target node 390 determines the target candidate PSCells to be prepared. In one or more modes, secondary target node 390 determines the preparation of PSCell 2-1 Petition 870250110697, dated 02 / 12 / 2025, pp. 47 / 68 41 / 52 and PSCell 2-2.

[0180] In one or more modes, in operation 620, the originating master node 380 transmits a modification request from the originating node to the target secondary node 390.

[0181] In one or more modes, in operation 625, the secondary target node 390 transmits the CPC configuration to the target PSCell 1-1 prepared for the master node 380. In one or more modes, in operation 330, the secondary target node 390 transmits the ID of the target PSCell 1-1 prepared for the master node 380.

[0182] In one or more modes, in operation 630, the originating master node 380 transmits a modification request from the originating node to the target secondary node 395.

[0183] In one or more modes, in operation 635, the secondary target node 395 transmits the CPC configuration for each target PSCell 2-1 and 2-2 prepared to the master node 380. In one or more modes, in operation 335, the other secondary target nodes 395 transmit the ID of each target PSCell prepared to the master node 380.

[0184] In one or more modes, in operation 340, master node 380 transmits a conditional (re)configuration containing the CPC settings of the candidate target PSCell(s) to user equipment 120. In one or more modes, in operation 340, master node 380 transmits CPC execution conditions corresponding to the transmitted CPC settings of the candidate target PSCell(s) to user equipment 120.

[0185] In one or more modes, in operation 345, the user equipment transmits a confirmation to the master node 380 that the user equipment 120 has received the conditional (re)configuration.

[0186] In one or more modes, in operation 355, user equipment 120 evaluates the CPC execution conditions corresponding to the CPC configurations transmitted from the target candidate PSCell(s). In one or more modes, in operation 355, user equipment 120 evaluates the Petition 870250110697, dated 02 / 12 / 2025, pp. 48 / 68 42 / 52 CPC execution conditions for the target PSCell(s) prepared.

[0187] In one or more modes, in the 360 ​​operation, a CPC execution condition is met for PSCell 1-1 on secondary node 390. In one or more modes, in the 360 ​​operation, a CPC execution condition is met for PSCell 1-1 on target secondary node 390. In one or more modes, the CPC execution condition includes a CP(A)C execution condition. In one or more modes, the CPC configuration is executed. In one or more modes, user equipment executes CPC towards secondary node 390.

[0188] In one or more modes, in operation 365, user equipment 120 transmits a message to master node 380 indicating the execution of the CPC configuration. In one or more modes, the message includes a complete secondary node radio resource control reconfiguration embedded for the target source node corresponding to the executed CPC configuration. In one or more modes, the complete radio resource control reconfiguration is for target source node 390.

[0189] In one or more modes, in operation 350, master node 380 transmits a confirmation to secondary node of origin 385 that user equipment 120 has received the (re)configuration. In one or more modes, master node 380 confirms preparation for change from secondary node to secondary node of origin 385. In one or more modes, master node 380 transmits the complete radio resource control reconfiguration from secondary node to secondary node of origin 385.

[0190] In one or more modes, in operation 370, master node 380 transmits the complete radio resource control reconfiguration from secondary node to the secondary target node corresponding to the executed CPC configuration. In one or more modes, the complete radio resource control reconfiguration is for secondary target node 390. In one or more modes, master node 380 transmits an acknowledgment to the secondary node. Petition 870250110697, dated 02 / 12 / 2025, pp. 49 / 68 43 / 52 target 390 that user equipment 120 received the (re)configuration. In one or more modes, master node 380 confirms preparation for change from secondary node to secondary node of origin 390.

[0191] In one or more modes, in operation 375, user equipment 320 completes a random access procedure to target source node 390.

[0192] In one or more modes, in operation 720, the secondary target node 390 transmits an indication to the user equipment to retain its own configuration. In one or more modes, the indication is sent at any time during the connection. In one or more modes, the indication is a radio resource control message. In one or more modes, the indication is a MAC control element message. In one or more modes, the indication is a downlink control information message.

[0193] In one or more modes, in operation 725, user equipment retains the configuration for source PSCell 1-1 based at least on the target secondary node indication 390.

[0194] In one or more modes, in operation 650, a user plan procedure is completed.

[0195] In one or more modes, in operation 655, a user equipment context release is delivered from master node 380 to secondary source node 385.

[0196] Referring now to Figure 8, the signaling diagram illustrates an alternative 800 process for conditional PSCell change (CPC) between source nodes initiated by source nodes according to an exemplary embodiment in which the executed CPC configuration is retained. In this exemplary embodiment, user equipment 120 is connected to a source master node 380 and a source secondary node 385, and changes to a PSCell connected to target secondary node 390 or target secondary node 395. In this exemplary embodiment, user equipment 120 changes to Petition 870250110697, dated 02 / 12 / 2025, pages 50 / 68 44 / 52 PSCell 1-1 is associated with secondary node 390; however, in other modes, user equipment may change to PSCell 2-1 or PSCell 2-2 associated with target secondary node 395. In this example mode, operations prior to operation 810 are equivalent to those of process 700 depicted in Figure 7.

[0197] In one or more modes, in operation 810, user equipment 120 transmits an indication to retain the CPC configuration executed from the PSCEll 1-1 service to the secondary target node 390. In one or more modes, the indication is sent at any time during the connection. In one or more modes, the indication is a radio resource control message. In one or more modes, the indication is a MAC control element message. In one or more modes, the indication is a downlink control information message.

[0198] In one or more modes, in operation 815, user equipment retains the configuration for PSCell 1-1 source as transmitted in the indication.

[0199] In one or more modes, in operation 650, a user plan procedure is completed.

[0200] In one or more modes, in operation 655, a user equipment context release is delivered from master node 380 to secondary source node 385.

[0201] In alternative modes, user equipment 120 can be configured with a maximum number of configurations. In one or more modes, master node 380 can receive an indication from target cells PSCell 1-1, PSCell 2-1, and / or PSCell 2-2 to retain their configurations. In one or more modes, master node 380 can interpret these configurations and send an indication to user equipment 120 indicating a cell configuration to remove. In one or more modes, user equipment 120 can retain all configurations in subsequent CPCs. Petition 870250110697, dated 02 / 12 / 2025, pp. 51 / 68 45 / 52 different from that which the master node 380 indicated not to maintain. In one or more modes, user equipment will not perform radio resource control processing in the indicated cell configuration so that a subsequent radio resource control delay is removed.

[0202] In one or more of these modes, technical advantages are provided. In one or more modes, maintaining the configuration of a service PSCell by user equipment 120 reduces TRRC_delay to 0 ms, therefore reducing the time required to transmit a random access physical channel preamble towards the target PSCell in the future.

[0203] Referring now to Figure 9, an illustrative flowchart is illustrated for a process 900 performed by an apparatus incorporated by, associated with, or otherwise communicating with (hereinafter generally referred to as being incorporated by) a user equipment 120 to retain a conditional change configuration of a primary cell group of secondary cells executed.

[0204] As shown in block 910 of Figure 9, the apparatus incorporated by the user equipment 120 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to receive by a user equipment (120) from a master node (380), a reconfiguration message including a set of conditional change configurations of primary cell of secondary cell group (CPC configuration for PSCell 1-1, 2-1 and 2-2 in Fig. 6), wherein the set of conditional change configurations of primary cell of secondary cell group include a set of execution conditions.In one or more embodiments, the computer-implemented method according to claim 1, wherein the set of conditional change configurations of primary cell to secondary cell group includes a plurality of conditional change configurations of primary cell to secondary cell group (CPC configuration for PSCell 1-1, 2-1 and 2-2 in Fig. 6).

[0205] As shown in block 920 of Figure 9, the incorporated device Petition 870250110697, dated 02 / 12 / 2025, pages 52 / 68 46 / 52 by user equipment 120 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to evaluate the set of operating conditions.

[0206] As shown in block 930 of Figure 9, the apparatus incorporated by the user equipment 120 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to, based on the evaluation of the set of execution conditions, execute one of the set of conditional change configurations of primary cell of secondary cell group (one of the CPC configuration for PSCell 1-1,2-1 and 22 in fig 6).

[0207] As shown in block 940 of Figure 9, the apparatus incorporated by the user equipment 120 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to receive, from the master node (380), an indication of the executed primary cell conditional change configuration of the secondary cell group (PSCell 1-1 CPC configuration in Fig. 6) to be retained. In one or more modes, the reconfiguration message includes the indication of the executed primary cell conditional change configuration of the secondary cell group to be retained (PSCell 1-1 CPC configuration in Fig. 6). In one or more modes, the indication of the executed primary cell conditional change configuration of the secondary cell group to be retained is received from a target secondary node (390) in a second reconfiguration message after execution. In one or more modes, the indication includes a radio resource control message.In one or more modes, the indication includes a MAC control element message. In one or more modes, the indication includes a downlink control information message. In one or more modes, the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained includes an indication of one or more of the change configuration sets. Petition 870250110697, dated 02 / 12 / 2025, pp. 53 / 68 47 / 52 conditional primary cell of secondary cell group not to be retained, and in which the set of conditional change settings of the primary cell of secondary cell group is retained except for one or more of the set of conditional change settings of the primary cell of secondary cell group. In one or more modes, the reconfiguration message includes the indication of one or more of the set of conditional change settings of the primary cell of secondary cell group not to be retained. In one or more modes, the indication of one or more of the set of conditional change settings of the primary cell of secondary cell group not to be retained is received in a second reconfiguration message after execution.

[0208] As shown in block 950 of Figure 9, the apparatus incorporated by the user equipment 120 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to retain the conditional change configuration of the primary cell to the secondary cell group performed. In one or more embodiments, the apparatus incorporated by the user equipment 120 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to complete a random access procedure associated with the conditional change configuration of the primary cell to the secondary cell performed (PSCell 1-1 CPC configuration in Fig. 6).

[0209] Referring now to Figure 10, an illustrative flowchart is shown for a process 1000 performed by an apparatus incorporated by, associated with, or otherwise communicating with (hereinafter generally referred to as being incorporated by) a base station 140 to perform transmission of a set of conditional change configurations from primary cell to secondary cell group. In one or more embodiments, base station 140 includes target secondary node 390. As shown in block 1010 of Figure 10, the apparatus incorporated by base station 140 includes means such as the processing circuitry 220, the interface Petition 870250110697, dated 02 / 12 / 2025, pp. 54 / 68 48 / 52 communication 260 or similar, to receive by a secondary target node (SN1 target 390 or SN2 target 395), a request to add a secondary node from a source master node (380).

[0210] As shown in block 1020 of Figure 10, the apparatus incorporated by base station 140 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to determine a set of primary cells of secondary cell groups (PSCell 1-1 of target SN1 and PSCell 2-1 and 2-2 of target SN2) associated with a set of conditional change configurations of primary cell of secondary cell group (CPC configuration for PSCell 1-1, 2-1 and 2-2 in Fig. 6). In one or more embodiments, the set of conditional change configurations of primary cell of secondary cell group includes a plurality of conditional change configurations of primary cell of secondary cell group (CPC configuration for PSCell 1-1, 2-1 and 2-2).

[0211] As shown in block 1030 of Figure 10, the apparatus incorporated by base station 140 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to transmit an indication of a conditional change configuration of a primary secondary cell group executed from the set of conditional change configurations of a primary secondary cell group (CPC configuration for PSCell 1-1, 2-1 and 2-2) to be retained. In one or more embodiments, the indication of the conditional change configuration of a primary secondary cell group executed to be retained is transmitted to a source master node (380) before the execution of the conditional change configuration of a primary secondary cell group executed. In one or more embodiments, the indication is transmitted by the source master node (380) to a user device (120).In one or more modes, the indication of the conditional change configuration of the primary cell of the secondary cell group is executed. Petition 870250110697, dated 02 / 12 / 2025, pages 55 / 68 49 / 52 (CPC of PSCell 0-1 in Fig. 6) to be retained is transmitted to a user equipment (120) after executing the conditional change configuration of the primary cell of the secondary cell group (CPC of PSCell 0-1 in Fig. 6) and during a connected period. In one or more modes, the indication includes a radio resource control message. In one or more modes, the indication includes a MAC control element message. In one or more modes, the indication includes a downlink control information message.

[0212] As shown in block 1040 of Figure 10, the apparatus incorporated by base station 140 includes means, such as the processing circuitry set 220, the communication interface 260 or similar, to transmit the set of conditional change configurations of primary cell of secondary cell group (CPC configuration for PSCell 11,2-1 and 2-2) to the originating master node (380).

[0213] Referring now to Figure 11, an illustrative flowchart is illustrated for an alternative process 1100 performed by an apparatus incorporated by, associated with, or otherwise communicating with (hereinafter generally referred to as being incorporated by) a user equipment 120 to retain a conditional change configuration of a primary cell group of secondary cells executed.

[0214] As shown in block 1110 of Figure 11, the apparatus incorporated by the user equipment 120 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to receive by a user equipment (120) from a master node (380), a reconfiguration message including a set of conditional change configurations of primary cell of secondary cell group, wherein the set of conditional change configurations of primary cell of secondary cell group includes a set of execution conditions. In one or more embodiments, the set of conditional change configurations of primary cell of secondary cell group includes a Petition 870250110697, dated 02 / 12 / 2025, pages 56 / 68 50 / 52 plurality of conditional change configurations of primary cell to secondary cell group.

[0215] As shown in block 1120 of Figure 11, the apparatus incorporated by the user equipment 120 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to evaluate the set of operating conditions.

[0216] As shown in block 1130 of Figure 11, the apparatus incorporated by the user equipment 120 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to, based on the evaluation of the set of execution conditions, execute one of the set of conditional change configurations of the primary cell of the group of secondary cells.

[0217] As shown in block 1140 of Figure 11, the apparatus incorporated by the user equipment 120 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to transmit to another target secondary node (395) an indication of the executed primary cell conditional change configuration of a secondary cell group to be retained. In one or more modes, the indication of the executed primary cell conditional change configuration of a secondary cell group to be retained is transmitted after execution during a connection period. In one or more modes, the indication includes a radio resource control message. In one or more modes, the indication includes a MAC control element message. In one or more modes, Uplink includes an uplink control information message.

[0218] As shown in block 1150 of Figure 11, the apparatus incorporated by the user equipment 120 includes means, such as the processing circuitry 220, the communication interface 260 or similar, to retain the configuration of the conditional change of the primary cell of the group of secondary cells performed. In one or more embodiments, the equipment of Petition 870250110697, dated 02 / 12 / 2025, pages 57 / 68 51 / 52 user 120 additionally includes means, such as the processing circuitry 220, the communication interface 260 or similar, to complete a random access procedure associated with the conditional change configuration of the primary cell of the group of secondary cells performed.

[0219] Figures 9-11 illustrate flowcharts depicting methods according to an exemplary embodiment of the present disclosure. It will be understood that each block of the flowcharts, and combination of blocks in the flowcharts, can be implemented by various means, such as hardware, firmware, processor, circuit assembly, and / or other communication devices associated with software execution including one or more computer program instructions. For example, one or more of the procedures described above can be incorporated by computer program instructions. In this sense, the computer program instructions incorporating the procedures described above can be stored by a memory device 240 of an apparatus employing an embodiment and executed by a processor 220.As will be understood, any such computer program instructions can be loaded into a computer or other programmable device (e.g., hardware) to produce a machine, so that the resulting computer or other programmable device implements the functions specified in the flowchart blocks. These computer program instructions can also be stored in computer-readable memory that can direct a computer or other programmable device to operate in a particular way so that the instructions stored in the computer-readable memory produce a manufactured article whose execution implements the function specified in the flowchart blocks. Computer program instructions can also be loaded into a computer or other programmable device to cause a series of operations to be performed on the computer or other programmable device to produce a process. Petition 870250110697, dated 02 / 12 / 2025, pages 58 / 68 52 / 52 implemented by computer, so that the instructions executed on the computer or other programmable device provide operations to implement the functions specified in the flowchart blocks.

[0220] Consequently, flowchart blocks support combinations of means to perform the specified functions and combinations of operations to perform the specified functions. It will also be understood that one or more flowchart blocks and combinations of blocks in flowcharts may be implemented by computer systems based on special-purpose hardware that perform the specified functions or combinations of special-purpose hardware and computer instructions.

[0221] Many modifications and other embodiments set forth herein will occur to a person skilled in the art to which this disclosure pertains, with the benefit of the teachings set forth in the preceding descriptions and associated drawings. Therefore, it will be understood that the disclosure is not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims.

[0222] Furthermore, although the preceding descriptions and associated drawings describe exemplary embodiments in the context of certain exemplary combinations of elements and / or functions, it should be understood that different combinations of elements and / or functions may be provided by alternative embodiments without departing from the scope of the appended claims. In this sense, for example, combinations of elements and / or functions other than those explicitly described above are also contemplated, as may be set forth in some of the appended claims. Although specific terms are employed herein, they are used only in a generic and descriptive sense and not for purposes of limitation. Petition 870250110697, dated 02 / 12 / 2025, pages 59 / 68

Claims

1 / 15 CLAIMS 1. A computer-implemented method characterized by comprising: receiving, by a user device of a master node, a reconfiguration message comprising a set of conditional change configurations for a primary cell of a secondary cell group, wherein the set of conditional change configurations for a primary cell of a secondary cell group comprises a set of execution conditions; evaluating the set of execution conditions; based on the evaluation of the set of execution conditions, executing one of the set of conditional change configurations for a primary cell of a secondary cell group; receiving, from the master node, an indication of the executed conditional change configuration for a primary cell of a secondary cell group to be retained; and retaining the executed conditional change configuration for a primary cell of a secondary cell group.

2. A computer-implemented method according to claim 1, characterized in that the reconfiguration message comprises an indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained.

3. A computer-implemented method, according to any one of claims 1-2, characterized in that the indication of the conditional change configuration of the primary cell of the executed secondary cell group to be retained is received from a secondary node in a second reconfiguration message after execution.

4. A computer-implemented method, according to any one of claims 1-3, characterized in that the set of conditional change configurations of a primary cell of a secondary cell group comprises a plurality of conditional change configurations of a primary cell of a secondary cell group. Petition 870250090303, dated 10 / 03 / 2025, pp. 169 / 185 2 / 15 5. A computer-implemented method, according to any one of claims 1-4, characterized in that the indication comprises a radio resource control message.

6. A computer-implemented method, according to any one of claims 1-5, characterized in that the indication comprises a MAC control element message.

7. A computer-implemented method, according to any one of claims 1-6, characterized in that the indication comprises a downlink control information message.

8. A computer-implemented method, according to any one of claims 1-7, characterized by further comprising completing a random access procedure associated with the configuration of a conditional change from primary to secondary cell.

9. A computer-implemented method, according to any one of claims 1-8, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained comprises an indication of one or more of: the set of conditional change configurations of the primary cell of the secondary cell group not to be retained, and in which the set of conditional change configurations of the primary cell of the secondary cell group is retained except for one or more of the set of conditional change configurations of the primary cell of the secondary cell group.

10. A computer-implemented method according to claim 9, characterized in that the reconfiguration message comprises the indication of one or more of the conditional change configuration sets of primary cells of secondary cell groups not to be retained.

11. A computer-implemented method, according to any one of claims 1-10, characterized in that the indication of one or more of the set of conditional change configurations of a primary cell group of secondary cells not to be retained is received in a second reconfiguration message after execution.

12. Computer-implemented method characterized by comprising: Petition 870250090303, dated 10 / 03 / 2025, page 170 / 185 3 / 15 receiving, by a secondary node, a request to add a secondary node from a source master node; determining a set of primary cells of secondary cell groups associated with a set of conditional change settings of a primary cell of a secondary cell group; transmitting an indication of a conditional change setting of a primary cell of a secondary cell group executed from the set of conditional change settings of a primary cell of a secondary cell group to be retained; and transmitting the set of conditional change settings of a primary cell of a secondary cell group to the source master node.

13. A computer-implemented method according to claim 12, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted to a source master node before the execution of the conditional change configuration of the primary cell of the secondary cell group executed.

14. A computer-implemented method according to claim 13, characterized in that the indication is transmitted by the originating master node to a user device.

15. A computer-implemented method, according to any one of claims 12-14, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted to a user device after executing the conditional change configuration of the primary cell of the secondary cell group executed and during a connected period.

16. A computer-implemented method, according to any one of claims 12-15, characterized in that the set of conditional change configurations of a primary cell of a secondary cell group comprises a plurality of conditional change configurations of a primary cell of a secondary cell group.

17. Computer-implemented method, according to any of claims 12-16, as described in Petition 870250090303, dated 10 / 03 / 2025, pp. 171 / 185 4 / 15, characterized in that the indication comprises a radio resource control message.

18. A computer-implemented method, according to any one of claims 12-17, characterized in that the indication comprises a MAC control element message.

19. A computer-implemented method, according to any one of claims 12-18, characterized in that the indication comprises a downlink control information message.

20. A computer-implemented method characterized by comprising: receiving, by a user device of a master node, a reconfiguration message comprising a set of conditional change configurations for a primary cell of a secondary cell group, wherein the set of conditional change configurations for a primary cell of a secondary cell group comprises a set of execution conditions; evaluating the set of execution conditions; based on the evaluation of the set of execution conditions, executing one of the set of conditional change configurations for a primary cell of a secondary cell group; transmitting, to another secondary node, an indication of the executed conditional change configuration for a primary cell of a secondary cell group to be retained; and retaining the executed conditional change configuration for a primary cell of a secondary cell group.

21. A computer-implemented method according to claim 20, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted after execution during a connection period.

22. A computer-implemented method, according to any one of claims 20-21, characterized in that the set of conditional change configurations of a primary cell of a group of secondary cells comprises a plurality of conditional change configurations of a primary cell of a group of secondary cells.

23. A computer-implemented method, according to any one of claims 20-22, characterized in that the indication comprises a radio resource control message.

24. A computer-implemented method, according to any one of claims 20-23, characterized in that the indication comprises a MAC control element message.

25. A computer-implemented method, according to any one of claims 20-24, characterized in that the indication comprises an uplink control information message.

26. A computer-implemented method, according to any one of claims 20-25, characterized by further comprising a random access procedure associated with the configuration of a conditional change of primary cell of a group of secondary cells performed.

27. Non-transient computer-readable storage medium characterized by comprising computer instructions which, when executed by an apparatus, cause the apparatus to perform the method as defined in any one of claims 1-11.

28. Non-transient computer-readable storage medium characterized by comprising computer instructions which, when executed by an apparatus, cause the apparatus to perform the method as defined in any one of claims 12-19.

29. Non-transient computer-readable storage medium characterized by comprising computer instructions which, when executed by an apparatus, cause the apparatus to perform the method as defined in any one of claims 20-26.

30. User equipment characterized by comprising: at least one processor; and at least one memory that stores instructions which, when executed by at least one processor, cause the user equipment to perform: Petition 870250090303, dated 03 / 10 / 2025, page.173 / 185 6 / 15 receive, from a master node, a reconfiguration message comprising a set of conditional change configurations for a primary cell of a secondary cell group, wherein the set of conditional change configurations for a primary cell of a secondary cell group comprises a set of execution conditions; evaluate the set of execution conditions; based on the evaluation of the set of execution conditions, execute one of the set of conditional change configurations for a primary cell of a secondary cell group; receive an indication of the executed conditional change configuration for a primary cell of a secondary cell group to be retained; and retain the executed conditional change configuration for a primary cell of a secondary cell group.

31. User equipment, according to claim 30, characterized in that the reconfiguration message comprises an indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained.

32. User equipment, according to any one of claims 30-31, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is received from a secondary node in a second reconfiguration message after execution.

33. User equipment, according to any one of claims 30-32, characterized in that the set of conditional change configurations of the primary cell of the secondary cell group comprises a plurality of conditional change configurations of the primary cell of the secondary cell group.

34. User equipment, according to any one of claims 30-33, characterized in that the indication comprises a radio resource control message.

35. User equipment, according to any of claims 30-34, characterized in that the indication comprises Petition 870250090303, dated 10 / 03 / 2025, page 174 / 185 7 / 15 a MAC control element message.

36. User equipment according to any one of claims 30-35, characterized in that the indication comprises a downlink control information message.

37. User equipment, according to any one of claims 30-36, characterized in that at least one memory and computer program code are additionally configured to, with at least one processor, enable the user equipment to: complete a random access procedure associated with the configuration of a conditional change of primary cell to secondary cell.

38. User equipment, according to any one of claims 30-37, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained comprises an indication of one or more of the set of conditional change configurations of the primary cell of the secondary cell group not to be retained, and in which the set of conditional change configurations of the primary cell of the secondary cell group is retained except for one or more of the set of conditional change configurations of the primary cell of the secondary cell group.

39. User equipment according to claim 38, characterized in that the reconfiguration message comprises the indication of one or more of the primary cell conditional change configuration sets of secondary cells not to be retained.

40. User equipment, according to any one of claims 30-39, characterized in that the indication of one or more of the set of conditional change configuration of primary cells of secondary cell groups not to be retained is received in a second reconfiguration message after execution.

41. Secondary node characterized by comprising: at least one processor; and at least one memory that stores instructions that, when executed by at least one processor, cause the secondary node to: receive a secondary node addition request from a source master node; determine a set of primary cells of secondary cell groups associated with a set of conditional change settings of a primary cell of a secondary cell group; transmit an indication of an executed conditional change setting of a primary cell of a secondary cell group from the set of conditional change settings of a primary cell of a secondary cell group to be retained; and transmit the set of conditional change settings of a primary cell of a secondary cell group to the source master node.

42. Secondary node, according to claim 41, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted to a source master node before the execution of the conditional change configuration of the primary cell of the secondary cell group executed.

43. Secondary node, according to claim 42, characterized in that the indication is transmitted by the originating master node to a user device.

44. Secondary node, according to any one of claims 41-43, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted to a user device after executing the conditional change configuration of the primary cell of the secondary cell group executed and during a connected period.

45. Secondary node, according to any one of claims 41-44, characterized in that the set of conditional change configurations of primary cell group of secondary cells comprises a plurality of conditional change configurations of primary cell group of secondary cells. Petition 870250090303, dated 10 / 03 / 2025, pp. 176 / 185 9 / 15 46. ​​Secondary node, according to any one of claims 41-45, characterized in that the indication comprises a radio resource control message.

47. Secondary node, according to any one of claims 41-46, characterized in that the indication comprises a MAC control element message.

48. Secondary node, according to any one of claims 41-47, characterized in that the indication comprises a downlink control information message.

49. User equipment characterized by comprising: at least one processor; and at least one memory that stores instructions that, when executed by at least one processor, cause the user equipment to: receive, from a master node, a reconfiguration message comprising a set of conditional change configurations for a primary cell of a secondary cell group, wherein the set of conditional change configurations for a primary cell of a secondary cell group comprises a set of execution conditions; evaluate the set of execution conditions; based on the evaluation of the set of execution conditions, execute one of the set of conditional change configurations for a primary cell of a secondary cell group; transmit to another secondary node an indication of the executed conditional change configuration for a primary cell of a secondary cell group to be retained;and retain the conditional change configuration of the primary cell to the secondary cell group that was executed.

50. User equipment, according to claim 49, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted after execution during a connection period. Petition 870250090303, dated 10 / 03 / 2025, pp. 177 / 185 10 / 15 51. User equipment, according to any one of claims 49-50, characterized in that the set of conditional change configurations of the primary cell of the secondary cell group comprises a plurality of conditional change configurations of the primary cell of the secondary cell group.

52. User equipment, according to any one of claims 49 to 51, characterized in that the indication comprises a radio resource control message.

53. User equipment, according to any one of claims 49 to 52, characterized in that the indication comprises a MAC control element message.

54. User equipment according to any one of claims 49 to 53, characterized in that the indication comprises an uplink control information message.

55. User equipment, according to any one of claims 49-54, characterized in that at least one memory and computer program code are further configured to, with at least one processor, enable the user equipment to: complete a random access procedure associated with the configuration of a conditional change of primary cell of a group of secondary cells executed.

56. User equipment characterized by comprising: means for receiving, from a master node, a reconfiguration message comprising a set of conditional change configurations of a primary cell of a secondary cell group, wherein the set of conditional change configurations of a primary cell of a secondary cell group comprises a set of execution conditions; means for evaluating the set of execution conditions; based on the evaluation of the set of execution conditions, means for executing one of the set of conditional change configurations of a primary cell of a secondary cell group; Petition 870250090303, dated 10 / 03 / 2025, pp. 178 / 185 11 / 15 means for receiving an indication of the executed conditional change configuration of a primary cell of a secondary cell group to be retained; and means for retaining the executed conditional change configuration of a primary cell of a secondary cell group.

57. User equipment according to claim 56, characterized in that the reconfiguration message comprises an indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained.

58. User equipment, according to any one of claims 56-57, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is received from a secondary node in a second reconfiguration message after execution.

59. User equipment according to any one of claims 56-58, characterized in that the set of conditional change configurations of the primary cell of the secondary cell group comprises a plurality of conditional change configurations of the primary cell of the secondary cell group.

60. User equipment, according to any one of claims 56-59, characterized in that the indication comprises a radio resource control message.

61. User equipment, according to any one of claims 56-60, characterized in that the indication comprises a MAC control element message.

62. User equipment according to any one of claims 56-61, characterized in that the indication comprises a downlink control information message.

63. User equipment, according to any of claims 56-62, characterized by further comprising: means for completing a random access procedure associated with the conditional change configuration of a primary cell to a secondary cell. Petition 870250090303, dated 10 / 03 / 2025, pp. 179 / 185 12 / 15 executed.

64. User equipment, according to any one of claims 56-63, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained comprises an indication of one or more of the set of conditional change configurations of the primary cell of the secondary cell group not to be retained, and in which the set of conditional change configurations of the primary cell of the secondary cell group is retained except for one or more of the set of conditional change configurations of the primary cell of the secondary cell group.

65. User equipment according to claim 64, characterized in that the reconfiguration message comprises the indication of one or more of the conditional change configuration set of primary cells of secondary cell groups not to be retained.

66. User equipment, according to any one of claims 56-65, characterized in that the indication of one or more of the set of conditional change configuration of primary cells of secondary cell groups not to be retained is received in a second reconfiguration message after execution.

67. A secondary node characterized by comprising: means for receiving a secondary node addition request from a source master node; means for determining a set of primary cells of secondary cell groups associated with a set of conditional change settings of a primary cell of a secondary cell group; means for transmitting an indication of a conditional change setting of a primary cell of a secondary cell group executed from the set of conditional change settings of a primary cell of a secondary cell group to be retained; and means for transmitting the set of conditional change settings of a primary cell of a secondary cell group to the source master node.

68. Secondary node, according to claim 67, characterized by Petition 870250090303, dated 10 / 03 / 2025, page 180 / 185 13 / 15, in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted to a source master node before the execution of the conditional change configuration of the primary cell of the secondary cell group executed.

69. Secondary node, according to claim 68, characterized in that the indication is transmitted by the originating master node to a user device.

70. Secondary node, according to any one of claims 67-69, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted to a user device after executing the conditional change configuration of the primary cell of the secondary cell group executed and during a connected period.

71. A secondary node, according to any one of claims 67-70, characterized in that the set of conditional change configurations of the primary cell of the secondary cell group comprises a plurality of conditional change configurations of the primary cell of the secondary cell group.

72. Secondary node, according to any one of claims 67-71, characterized in that the indication comprises a radio resource control message.

73. Secondary node, according to any one of claims 67-72, characterized in that the indication comprises a MAC control element message.

74. Secondary node, according to any one of claims 67-73, characterized in that the indication comprises a downlink control information message.

75. User equipment characterized by comprising: means for receiving, from a master node, a reconfiguration message comprising a set of conditional change configurations for a primary cell of a secondary cell group, wherein the set of conditional change configurations for a primary cell of a secondary cell group comprises a set of execution conditions; means for evaluating the set of execution conditions; means for, based on the evaluation of the set of execution conditions, executing one of the set of conditional change configurations for a primary cell of a secondary cell group; means for transmitting to another secondary node an indication of the executed conditional change configuration for a primary cell of a secondary cell group to be retained; and means for retaining the executed conditional change configuration for a primary cell of a secondary cell group.

76. User equipment, according to claim 75, characterized in that the indication of the conditional change configuration of the primary cell of the secondary cell group executed to be retained is transmitted after execution during a connection period.

77. User equipment, according to any one of claims 75-76, characterized in that the set of conditional change configurations of the primary cell of the secondary cell group comprises a plurality of conditional change configurations of the primary cell of the secondary cell group.

78. User equipment, according to any one of claims 75-77, characterized in that the indication comprises a radio resource control message.

79. User equipment, according to any one of claims 75-78, characterized in that the indication comprises a MAC control element message.

80. User equipment according to any one of claims 75-79, characterized in that the indication comprises an uplink control information message.

81. User equipment, according to any one of claims 75-80, characterized by further comprising: means for completing a random access procedure associated with the conditional change configuration of a primary cell of a group of secondary cells. Petition 870250090303, dated 10 / 03 / 2025, pp. 182 / 185 15 / 15 executed. Petition 870250090303, dated 10 / 03 / 2025, pp. 183 / 185

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