WO2023127271A1 - 無線アクセスネットワークノード、User Equipment、及びこれらの方法 - Google Patents
無線アクセスネットワークノード、User Equipment、及びこれらの方法 Download PDFInfo
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- WO2023127271A1 WO2023127271A1 PCT/JP2022/040268 JP2022040268W WO2023127271A1 WO 2023127271 A1 WO2023127271 A1 WO 2023127271A1 JP 2022040268 W JP2022040268 W JP 2022040268W WO 2023127271 A1 WO2023127271 A1 WO 2023127271A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/34—Reselection control
- H04W36/36—Reselection control by user or terminal equipment
- H04W36/362—Conditional handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/20—Interfaces between hierarchically similar devices between access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Definitions
- the present disclosure relates to wireless communication systems, and more particularly to conditional mobility of wireless terminals.
- CPC Conditional Handover (CHO) and Conditional Secondary Cell Group (SCG) Cell (PSCell) Change (CPC).
- CPC in 3GPP Release 16 is inter-SN CPC within Secondary Node (SN) without Master Node (MN) involvement, and one or more source PSCells within one SN Support conditional PSCell change to any of the above candidate cells (i.e., Candidate PSCell).
- This CPC is also called SN-initiated Conditional SN Modification without MN involvement without MN involvement and SN-initiated.
- Conditional mobility that will be newly introduced in 3GPP Release 17 includes Conditional PSCell Addition (CPA) and inter-SN CPC.
- CPA is also called conditional SN addition and inter-SN CPC is also called conditional SN change.
- Inter-SN CPC or conditional SN change is initiated by MN or source SN.
- Multi-Radio Dual Connectivity (MR-DC) with selective activation of cell groups for example, Non-Patent Documents 4 and 5 .
- the UE selects any candidate target PSCell and performs random access to the selected target PSCell, depending on which unused (not selected) CPC/CPA You need to free the settings. Therefore, the UE has no chance to perform subsequent CPCs without reconfiguring and reinitializing the CPCs from the network.
- Multi-Radio Dual Connectivity (MR-DC) with selective activation of cell groups” aims to address this issue.
- MR-DC with selective activation of cell groups reconfigures and reinitializes CPC/CPA preparations from the network after changing the SCG. initialization) to allow subsequent CPC/CPA, which can reduce CPC/CPA signaling overhead and interruption time.
- MR-DC Multi-Radio Dual Connectivity
- MR-DC Multi-Radio Dual Connectivity
- the candidate PSCell configuration may be a cell group (CG) configuration, an SCG configuration, or an SCG radio resource configuration.
- CG cell group
- SCG SCG
- SCG radio resource configuration SCG radio resource configuration
- Yet another one of these issues relates to realizing a function or operation mode similar to "Multi-Radio Dual Connectivity (MR-DC) with selective activation of cell groups" in CHO. For example, after a UE performs a first CHO from a source cell to one of the candidate target cells, a subsequent second CHO by the UE without reconfiguring or reinitializing the CHO preparation from the network. Enabling this may contribute to enhancement of mobility functions. However, at present, the mechanisms and procedures for realizing this function or mode of operation for CHO are not clear.
- MR-DC Multi-Radio Dual Connectivity
- One of the objectives that the embodiments disclosed herein seek to achieve, including the problems described above, is that after the first conditional mobility, subsequent second without reconfiguration or reinitialization from the network It is an object of the present invention to provide an apparatus, a method, and a program that contribute to solving at least one of a plurality of problems regarding implementation of a function or operation mode that enables 2 conditional mobility. It should be noted that this objective is only one of the objectives that the embodiments disclosed herein seek to achieve. Other objects or problems and novel features will become apparent from the description of the specification or the accompanying drawings.
- a first aspect is directed to a RAN node configured to operate as a Master Node (MN) associated with a Master Cell Group (MCG) in dual connectivity for User Equipment (UE).
- the RAN node includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to send control messages to candidate Secondary Nodes (SNs).
- the control message indicates that one or more candidate PSCells are prepared by the candidate SN for first conditional mobility with the addition or modification of a Primary Secondary Cell Group (SCG) Cell (PSCell) for the UE. indicate that it is necessary.
- SCG Primary Secondary Cell Group
- PSCell Primary Secondary Cell Group
- control message indicates that the configuration of the one or more candidate PSCells provided to the UE for the first conditional mobility is set to subsequent conditional PSCells after the first conditional mobility. It indicates that the operating mode is recommended to be reused by the UE for changes.
- a second aspect is directed to a method performed by a RAN node configured to act as a MN associated with an MCG in dual connectivity for a UE.
- the method includes sending a control message to the candidate SN.
- the control message indicates that one or more candidate PSCells need to be prepared by the candidate SN for first conditional mobility with addition or modification of PSCells for the UE. Additionally, the control message indicates that the configuration of the one or more candidate PSCells provided to the UE for the first conditional mobility is set to subsequent conditional PSCells after the first conditional mobility. It indicates that the operating mode is recommended to be reused by the UE for changes.
- a third aspect is directed to a RAN node configured to act as a source SN associated with an SCG in dual connectivity for a UE.
- the RAN node includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to send a control message to the dual connectivity MN.
- the control message indicates one or more candidate PSCells that the source SN recommends for a first conditional PSCell change for the UE.
- the control message indicates that the configuration of the one or more candidate PSCells supplied to the UE for the first conditional PSCell change is a subsequent condition after the first conditional PCell change. It indicates that the operation mode reused by the UE for PSCell change with UE is recommended.
- a fourth aspect is directed to a method performed by a RAN node configured to act as a source SN associated with an SCG in dual connectivity for a UE.
- the method includes sending a control message to the dual connectivity MN.
- the control message indicates one or more candidate PSCells that the source SN recommends for a first conditional PSCell change for the UE. Additionally, the control message indicates that the configuration of the one or more candidate PSCells supplied to the UE for the first conditional PSCell change is a subsequent condition after the first conditional PCell change. It indicates that the operation mode reused by the UE for PSCell change with UE is recommended.
- a fifth aspect is directed to a RAN node configured to operate as a candidate SN associated with an SCG in dual connectivity for a UE.
- the RAN node includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to receive a first control message from the dual connectivity MN and to send a second control message to the MN in response to the first control message.
- the first control message indicates that one or more candidate PSCells need to be prepared for a first conditional mobility with addition or modification of PSCells for the UE.
- the second control message indicates at least one candidate PSCell prepared by the candidate SN among the one or more candidate PSCells.
- the second control message indicates that the configuration of the at least one candidate PSCell supplied to the UE for the first conditional mobility is a subsequent conditional after the first conditional mobility. It indicates that the operation mode reused by the UE for PSCell change is recommended.
- a sixth aspect is directed to a method performed by a RAN node configured to operate as a candidate SN associated with an SCG in dual connectivity for a UE.
- the method includes receiving a first control message from the dual connectivity MN and sending a second control message to the MN in response to the first control message.
- the first control message indicates that one or more candidate PSCells need to be prepared for a first conditional mobility with addition or modification of PSCells for the UE.
- the second control message indicates at least one candidate PSCell prepared by the candidate SN among the one or more candidate PSCells.
- the second control message indicates that the configuration of the at least one candidate PSCell supplied to the UE for the first conditional mobility is a subsequent conditional after the first conditional mobility. It indicates that the operation mode reused by the UE for PSCell change is recommended.
- a seventh aspect is directed to a RAN node configured to operate as a candidate SN associated with an SCG in dual connectivity for a UE.
- the RAN node includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to prepare one or more candidate PSCells in a first conditional mobility with PSCell addition or modification for the UE.
- the at least one processor is configured to send an SN Radio Resource Control (RRC) message to the UE if one of the one or more candidate PSCells is selected by the UE.
- the SN RRC message indicates that the configuration of one or more candidate PSCells other than the selected candidate PSCell prepared for the first conditional mobility is subsequent to the first conditional mobility.
- UE reused operation mode for conditional PSCell change is recommended.
- An eighth aspect is directed to a method performed by a RAN node configured to operate as a candidate SN associated with an SCG in dual connectivity for a UE.
- the method comprises (a) preparing one or more candidate PSCells in a first conditional mobility with PSCell addition or modification for the UE; and (b) determining the one or more candidate PSCells. sending an SN Radio Resource Control (RRC) message to the UE if one of them is selected by the UE.
- RRC Radio Resource Control
- the SN RRC message indicates that the configuration of one or more candidate PSCells other than the selected candidate PSCell prepared for the first conditional mobility is subsequent to the first conditional mobility.
- UE reused operation mode for conditional PSCell change is recommended.
- a ninth aspect is directed to a RAN node configured to act as a source node for conditional handover of a UE.
- the RAN node includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to transmit control messages to candidate target nodes.
- the control message indicates that one or more candidate target cells need to be prepared by the candidate target node for a first conditional handover of the UE.
- the control message may indicate that the configuration of the one or more candidate target cells provided to the UE for the first conditional handover is a subsequent second conditional handover after the first conditional handover.
- the operation mode reused by the UE is recommended for conditional handover of .
- a tenth aspect is directed to a method performed by a RAN node configured to act as a source node for conditional handover of a UE.
- the method includes transmitting a control message to a candidate target node.
- the control message indicates that one or more candidate target cells need to be prepared by the candidate target node for a first conditional handover of the UE.
- the control message may indicate that the configuration of the one or more candidate target cells provided to the UE for the first conditional handover is a subsequent second conditional handover after the first conditional handover.
- the operation mode reused by the UE is recommended for conditional handover of .
- An eleventh aspect is directed to a RAN node configured to act as a candidate target node for conditional handover of a UE.
- the RAN node includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to receive a first control message from a source node and transmit a second control message to the source node in response to the first control message.
- the first control message indicates that one or more candidate target cells need to be prepared for a first conditional handover of the UE.
- the second control message indicates at least one candidate target cell prepared by the source node among the one or more candidate target cells.
- the second control message indicates that the configuration of the at least one candidate target cell supplied to the UE for the first conditional handover is a subsequent second after the first conditional handover. 2 shows that the operating mode reused by the UE for conditional handover of 2 is recommended.
- a twelfth aspect is directed to a method performed by a RAN node configured to act as a candidate target node for conditional handover of a UE.
- the method includes receiving a first control message from a source node and transmitting a second control message to the source node in response to the first control message.
- the first control message indicates that one or more candidate target cells need to be prepared for a first conditional handover of the UE.
- the second control message indicates at least one candidate target cell prepared by the source node among the one or more candidate target cells.
- the second control message indicates that the configuration of the at least one candidate target cell supplied to the UE for the first conditional handover is a subsequent second after the first conditional handover. 2 shows that the operating mode reused by the UE for conditional handover of 2 is recommended.
- a thirteenth aspect is directed to a RAN node configured to act as a candidate target node for conditional handover of a UE.
- the RAN node includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to prepare one or more candidate target cells for a first conditional handover of the UE.
- the at least one processor is configured to send an RRC message to the UE if one of the one or more candidate target cells is selected by the UE.
- the RRC message indicates that the configuration of one or more candidate target cells other than the selected candidate target cell prepared for the first conditional handover is after the first conditional handover.
- Fig. 4 shows that the operation mode reused by the UE for subsequent second conditional handover is recommended;
- a fourteenth aspect is directed to a method performed by a RAN node configured to act as a candidate target node for conditional handover of a UE.
- the method comprises: (a) preparing one or more candidate target cells for a first conditional handover of the UE; and (b) one of the one or more candidate target cells is selected by the UE. If selected, sending an RRC message to the UE.
- the RRC message indicates that the configuration of one or more candidate target cells other than the selected candidate target cell prepared for the first conditional handover is after the first conditional handover.
- Fig. 4 shows that the operation mode reused by the UE for subsequent second conditional handover is recommended;
- the fifteenth aspect is directed to the UE.
- the UE includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to receive from the MN multiple candidate PSCell configurations provided by multiple candidate SNs for a first conditional mobility with addition or modification of a PSCell for the UE. .
- the at least one processor is configured to apply settings corresponding to the one candidate PSCell if an execution condition for one of the plurality of candidate PSCells is met.
- the at least one processor configures only other one or more candidate PSCells provided by the selected candidate SN that provides the one candidate PSCell after the first conditional mobility. It is configured to be selectively maintained for subsequent conditional PSCell modifications.
- a sixteenth aspect is directed to a method performed by a UE.
- the method includes the following steps: (a) receiving from MN configurations of candidate PSCells provided by candidate SNs for a first conditional mobility with addition or modification of PSCells for said UE; (b) if an execution condition of one of the plurality of candidate PSCells is satisfied, applying the configuration corresponding to the one candidate PSCell; and (c) a selected candidate providing the one candidate PSCell. Selectively maintaining only one or more other candidate PSCell configurations provided by the SN for subsequent conditional PSCell changes after said first conditional mobility.
- the seventeenth aspect is directed to the UE.
- the UE includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to receive from the MN multiple candidate PSCell configurations provided by multiple candidate SNs for a first conditional mobility with addition or modification of a PSCell for the UE. .
- the at least one processor is configured to apply settings corresponding to the one candidate PSCell if an execution condition for one of the plurality of candidate PSCells is met.
- the at least one processor configures one or more candidate PSCells designated by the MN or one or more candidate SNs among the plurality of candidate PSCells other than the one candidate PSCell, It is configured to selectively maintain for subsequent conditional PSCell changes after the first conditional mobility.
- An eighteenth aspect is directed to a method performed by a UE.
- the method includes the following steps: (a) receiving from MN configurations of candidate PSCells provided by candidate SNs for a first conditional mobility with addition or modification of PSCells for said UE; (b) if the execution condition for one of the plurality of candidate PSCells is satisfied, applying the configuration corresponding to the one candidate PSCell; and (c) the plurality of candidate PSCells other than the one candidate PSCell. selectively configure one or more candidate PSCells designated by the MN or one or more candidate SNs for subsequent conditional PSCell changes after the first conditional mobility. be maintained.
- a nineteenth aspect is directed to a RAN node configured to operate as a candidate SN associated with an SCG in dual connectivity for a UE.
- the RAN node includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to indicate to the MN one or more candidate PSCells prepared by the candidate SN for a first conditional mobility involving addition or modification of PSCells for the UE.
- the at least one processor determines, among the one or more candidate PSCells, that settings need to be maintained for subsequent conditional PSCell changes after the first conditional mobility. It is configured to indicate one candidate PSCell to the MN.
- a twentieth aspect is directed to a method performed by a RAN node configured to operate as a candidate SN associated with an SCG in dual connectivity for a UE.
- the method includes the following steps: (a) indicating to MN) one or more candidate PSCells prepared by said candidate SN for a first conditional mobility with PSCell addition or change for said UE; and (b) said one. or indicating to the MN at least one of the more candidate PSCells whose configuration needs to be maintained for subsequent conditional PSCell changes after the first conditional mobility.
- a twenty-first aspect is directed to a RAN node configured to operate as a MN associated with an MCG in dual connectivity for a UE.
- the RAN node includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to receive a control message from a first candidate SN for a first conditional mobility involving addition or modification of PSCells for the UE.
- Said control message indicates one or more candidate PSCells prepared by said first candidate SN for said first conditional mobility.
- the control message specifies at least one of the one or more candidate PSCells whose configuration needs to be maintained for subsequent conditional PSCell changes after the first conditional mobility. Indicates a candidate PSCell.
- a twenty-second aspect is directed to a method performed by a RAN node configured to act as a MN associated with an MCG in dual connectivity for a UE.
- the method includes receiving a control message from a first candidate SN for a first conditional mobility involving addition or modification of PSCells for the UE.
- Said control message indicates one or more candidate PSCells prepared by said first candidate SN for said first conditional mobility.
- the control message specifies at least one of the one or more candidate PSCells whose configuration needs to be maintained for subsequent conditional PSCell changes after the first conditional mobility. Indicates a candidate PSCell.
- the twenty-third aspect is directed to the UE.
- the UE includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to receive from a source node multiple candidate target cell configurations provided by multiple candidate target nodes for a first conditional handover of the UE.
- the at least one processor is configured to apply settings corresponding to the one candidate target cell if an execution condition for one of the plurality of candidate target cells is met. Further, the at least one processor only configures one or more other candidate target cells provided by a selected candidate target node providing the one candidate target cell in the first conditional handover. is configured to selectively maintain for a subsequent second conditional handover of .
- a twenty-fourth aspect is directed to a method performed by a UE.
- the method includes the following steps: (a) receiving from a source node a plurality of candidate target cell configurations provided by a plurality of candidate target nodes for a first conditional handover of said UE; (b) if an execution condition for one of the plurality of candidate target cells is met, applying settings corresponding to the one candidate target cell; and (c) selecting to provide the one candidate target cell. selectively maintaining for a second conditional handover subsequent to said first conditional handover only one or more other candidate target cell configurations provided by the selected candidate target node.
- the twenty-fifth aspect is directed to the UE.
- the UE includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to receive from a source node multiple candidate target cell configurations provided by multiple candidate target nodes for a first conditional handover of the UE.
- the at least one processor is configured to apply settings corresponding to the one candidate target cell if an execution condition for one of the plurality of candidate target cells is met. Further, the at least one processor selects one or more candidate target cells designated by the source node or one or more candidate target nodes among the plurality of candidate target cells other than the one candidate target cell. for a second conditional handover subsequent to said first conditional handover.
- a twenty-sixth aspect is directed to a method performed by a UE.
- the method includes the following steps: (a) receiving from a source node a plurality of candidate target cell configurations provided by a plurality of candidate target nodes for a first conditional handover of said UE; (b) if an execution condition for one of the plurality of candidate target cells is satisfied, applying settings corresponding to the one candidate target cell; and (c) the plurality of candidate target cells excluding the one candidate target cell. of the candidate target cells specified by the source node or one or more candidate target nodes in a subsequent second conditional handover of the first conditional handover. Selectively maintaining for handover.
- a twenty-seventh aspect is directed to a RAN node configured to act as a candidate target node for conditional handover of a UE.
- the RAN node includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to indicate to a source node one or more candidate target cells prepared by the target node for a first conditional handover of the UE. Additionally, the at least one processor should maintain its configuration for a second conditional handover subsequent to the first conditional handover among the one or more candidate target cells. configured to indicate at least one candidate target cell to the source node;
- a twenty-eighth aspect is directed to a method performed by a RAN node configured to act as a candidate target node for conditional handover of a UE.
- the method includes the following steps: (a) indicating to a source node one or more candidate target cells prepared by said target node for a first conditional handover of said UE; and (b) said one or more candidate target cells. indicating to the source node at least one candidate target cell among which the configuration needs to be maintained for a second conditional handover subsequent to the first conditional handover.
- a twenty-ninth aspect is directed to a RAN node configured to act as a source node for conditional handover of a UE.
- the RAN node includes at least one memory and at least one processor coupled to the at least one memory.
- the at least one processor is configured to receive a control message from a first candidate target node for a first conditional handover of the UE.
- the control message indicates one or more candidate target cells prepared by the first candidate target node for the first conditional handover.
- the control message should maintain its configuration for a subsequent second conditional handover after the first conditional handover among the one or more candidate target cells. At least one candidate target cell is shown.
- a thirtieth aspect is directed to a method performed by a RAN node configured to act as a source node for conditional handover of a UE.
- the method includes receiving a control message from a first candidate target node for a first conditional handover of the UE.
- the control message indicates one or more candidate target cells prepared by the first candidate target node for the first conditional handover.
- the control message should maintain its configuration for a subsequent second conditional handover after the first conditional handover among the one or more candidate target cells. At least one candidate target cell is shown.
- the thirty-first aspect is directed to the program.
- the program comprises instructions (software code) that, when read into a computer, cause the computer to perform a method according to any of the aspects described above.
- FIG. 1 is a diagram illustrating a configuration example of a radio communication system according to an embodiment
- FIG. 1 is a diagram illustrating a configuration example of a radio communication system according to an embodiment
- FIG. 1 is a diagram illustrating a configuration example of a radio communication system according to an embodiment
- FIG. FIG. 1 is a diagram illustrating a configuration example of a radio communication system according to an embodiment
- 4 is a diagram illustrating a configuration example of a RAN node according to the embodiment; 4 is a flow chart showing an example of operation of a RAN node (i.e., MN) according to the embodiment; 4 is a flow chart showing an example of operation of a RAN node (i.e., source SN) according to an embodiment; 4 is a flow chart showing an example of operation of a RAN node (i.e., candidate (target) SN) according to an embodiment; 4 is a flow chart showing an example of operation of a RAN node (i.e., candidate (target) SN) according to an embodiment; FIG.
- FIG. 4 is a sequence diagram showing an example of signaling for Inter-SN CPC (or conditional SN change) according to an embodiment
- FIG. 4 is a sequence diagram showing an example of signaling for Inter-SN CPC (or conditional SN change) according to an embodiment
- FIG. 4 is a sequence diagram showing an example of signaling for Inter-SN CPC (or conditional SN change) according to an embodiment
- FIG. 4 is a sequence diagram showing an example of signaling for Inter-SN CPC (or conditional SN change) according to an embodiment
- 4 is a flow chart showing an example of the operation of a UE according to the embodiment
- 4 is a flow chart showing an example of the operation of a UE according to the embodiment
- FIG. 4 is a sequence diagram showing an example of signaling for Inter-SN CPC (or conditional SN change) according to an embodiment
- 4 is a flow chart showing an example of the operation of a RAN node (i.e., CHO source node) according to an embodiment
- FIG. 4 is a flowchart illustrating an example of operation of a RAN node (i.e., CHO candidate target node) according to an embodiment
- FIG. 4 is a flowchart illustrating an example of operation of a RAN node (i.e., CHO candidate target node) according to an embodiment
- FIG. FIG. 4 is a sequence diagram showing an example of signaling regarding CHO according to the embodiment
- FIG. 4 is a sequence diagram showing an example of signaling regarding CHO according to the embodiment; 4 is a flow chart showing an example of the operation of a UE according to the embodiment; 4 is a flow chart showing an example of the operation of a UE according to the embodiment; FIG. 4 is a sequence diagram showing an example of signaling regarding CHO according to the embodiment; 3 is a block diagram showing a configuration example of a RAN node according to the embodiment; FIG. 2 is a block diagram showing a configuration example of a UE according to an embodiment; FIG.
- LTE Long Term Evolution
- 5G system 5th generation mobile communication system
- LTE Long Term Evolution
- LTE-Advanced 5th generation mobile communication system
- ⁇ if'' is ⁇ when'', ⁇ at or around the time'', ⁇ after ( “after”, “upon”, “in response to determining", “in accordance with a determination", or “detecting may be interpreted to mean “in response to detecting”. These expressions may be interpreted to have the same meaning depending on the context.
- FIG. 1 shows a configuration example of a wireless communication system according to multiple embodiments.
- the wireless communication system includes RAN node 1, RAN node 2, RAN node 4 and UE3.
- Each element (network function) shown in FIG. 1 can be, for example, as a network element on dedicated hardware, as a software instance running on dedicated hardware, or on an application platform. It can be implemented as an instantiated virtualization function.
- the RAN node 1 may be a Central Unit (e.g. eNB-CU or gNB-CU) in a cloud RAN (C-RAN) deployment, or a CU and one or more Distributed Units (e.g. eNB-DUs , or gNB-DUs). C-RAN is also called CU/DU split. Additionally, a CU may include a Control Plane (CP) Unit (e.g. gNB-CU-CP) and one or more User Plane (UP) Units (e.g. gNB-CU-UP). Therefore, RAN node 1 may be a CU-CP or a combination of CU-CP and CU-UP.
- CP Control Plane
- UP User Plane
- each of RAN nodes 2 and 4 may be a CU or a combination of a CU and one or more DUs.
- Each of RAN nodes 2 and 4 may be a CU-CP or a combination of CU-CP and CU-UP.
- Each of RAN nodes 1, 2, and 4 may be an Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (EUTRAN) node or a Next generation Radio Access Network (NG-RAN) node.
- EUTRAN nodes may be eNBs or en-gNBs.
- NG-RAN nodes may be gNBs or ng-eNBs.
- An en-gNB is a node that provides NR user plane and control plane protocol termination to the UE and acts as a secondary node (SN) for E-UTRA-NR Dual Connectivity (EN-DC).
- ng-eNB is a node that provides E-UTRA user plane and control plane protocol termination to UE and is connected to 5GC via NG interface.
- the Radio Access Technology (RAT) of RAN node 1 may be different from that of RAN nodes 2 and 4.
- RAT Radio Access Technology
- RAN node 1 and RAN node 2 communicate with each other via an inter-node interface (i.e., X2 interface or Xn interface) 103 .
- RAN node 1 and RAN node 2 operate as a dual connectivity master node (MN) and secondary node (SN), respectively.
- MN master node
- SN secondary node
- RAN node 1 and RAN node 4 communicate with each other via an inter-node interface (i.e., X2 interface or Xn interface) 105 .
- RAN node 1 and RAN node 4 can act as DC MN and SN respectively.
- RAN nodes 1, 2 and 4 and UE3 support inter-SN CPC from the SCG provided by RAN node 2 to the SCG provided by RAN node 4. Therefore, hereinafter, RAN node 1 may be referred to as MN1, RAN node 2 may be referred to as source SN (S-SN) 2, and RAN node 4 may be referred to as target SN (T-SN) 4 or candidate SN 4. I may call Inter-SN CPC may be referred to as conditional SN change. Inter-SN CPC (or conditional SN change) is an inter-SN PSCell change procedure (or SN change procedure) that is executed only when the CPC execution conditions are met.
- each candidate PSCell configuration is an Information Element (IE) (e.g., condRRCReconfig) of the RRC message of MN1, which contains one or more candidate PSCell configurations and associated CPC execution conditions. is included in the conditional mobility configuration information (e.g., conditionalReconfiguration IE) generated by MN1.
- IE Information Element
- conditional mobility configuration information e.g., conditionalReconfiguration IE
- the configuration of each candidate PSCell is generated by the candidate SN (e.g., candidate SN4) that provides (or prepares) this candidate PSCell.
- Configuration of each candidate PSCell includes at least configuration information for the candidate PSCell.
- Configuration of each candidate PSCell may further include configuration information for one or more SCells associated with the candidate PSCell (ie, configured together with or associated with the candidate PSCell).
- the configuration of each candidate PSCell may be radio bearer (RB) configuration, cell group (CG) configuration, SCG configuration, or SCG radio resource configuration, or any combination thereof.
- each candidate PSCell may be an SN RRC Reconfiguration message generated by the candidate SN (e.g., candidate SN4) that provides (or prepares) this candidate PSCell.
- Some or all of the configuration of one or more candidate PSCells are included in the CPC configuration sent from MN1 to UE3.
- the CPC configuration of Inter-SN CPC is a list of one or more MN RRC Reconfiguration messages.
- Each MN RRC Reconfiguration message includes configuration of candidate PSCells received from candidate SNs (e.g., one or any combination of RB configuration, CG configuration, SCG configuration, SCG radio resource configuration, and SN RRC Reconfiguration message). .
- the CPC execution condition is generated by MN1 in case of MN-initiated inter-SN CPC, and generated by source SN2 in case of SN-initiated inter-SN CPC.
- a CPC execution condition may consist of one or more trigger conditions.
- the conditions or criteria that trigger a CPC event may be similar to those for measurement reporting events, such as CondEvent B1, CondEvent A3, CondEvent A4, or CondEvent A5.
- CondEvent B1 is "Conditional reconfiguration candidate becomes better than absolute threshold”.
- CondEvent A3 is "Conditional reconfiguration candidate becomes amount of offset better than PCell/PSCell”.
- CondEvent A4 is "Conditional reconfiguration candidate becomes better than absolute threshold”.
- CondEvent A5 is "PCell/PSCell becomes worse than absolute threshold1 AND Conditional reconfiguration candidate becomes better than another absolute threshold2”.
- UE3 evaluates CPC execution conditions. If the execution condition of one candidate PSCell is satisfied, UE3 sets the PSCell corresponding to the selected candidate PSCell (i.e., the candidate PSCell whose execution condition is satisfied) (e.g., RB setting, CG setting, SCG configuration, SCG radio resource configuration, and SN RRC Reconfiguration message or any combination) is applied. If a bearer requiring SCG radio resources is configured, UE3 synchronizes to the selected PSCell. If the execution conditions of two or more candidate PSCells are met, UE3 may select one from those candidate PSCells and perform the above operations.
- the candidate PSCell i.e., the candidate PSCell whose execution condition is satisfied
- UE3 communicates with MN1 and S-SN2 via air interfaces 101 and 102 and performs dual connectivity of MCG provided by MN1 and SCG provided by S-SN2. Also, by performing inter-SN CPC, UE3 communicates with MN1 and T-SN4 via air interfaces 101 and 104, and has dual connectivity of MCG provided by MN1 and SCG provided by T-SN4. conduct.
- MN1 can be either a master eNB (in EN-DC), a master ng-eNB (in NGEN-DC), or a master gNB (in NR-DC and NE-DC).
- each of S-SN2 and T-SN4 is en-gNB (in EN-DC), secondary ng-eNB (in NE-DC), and secondary gNB (in NR-DC and NGEN-DC).
- EN-DC UE3 is connected to eNB acting as MN1 and to en-gNB acting as S-SN2 or T-SN4.
- NGEN-DC UE3 is connected to ng-eNB acting as MN1 and to gNB acting as S-SN2 or T-SN4.
- NE-DC is connected to gNB acting as MN1 and to ng-eNB acting as S-SN2 or T-SN4.
- UE3 is connected to one gNB (or gNB-DU) acting as MN1 and connected to another gNB (or gNB-DU) acting as S-SN2 or T-SN4. .
- MCG is a group of serving cells associated with (or served by) MN1, SpCell (i.e., Primary Cell (PCell)) and optionally one or more secondary cells ( Secondary Cells (SCells)).
- SCG is a group of serving cells associated with (or provided by) S-SN2 or T-SN4, Primary SCG Cell (PSCell) and optionally one or more Secondary Cells (SCells) above.
- PSCell is a Special Cell (SpCell) of SCG and supports Physical Uplink Control Channel (PUCCH) transmission and contention-based Random Access.
- PSCell may be an abbreviation for Primary SCell.
- the term “primary SCG cell” and its abbreviation “PSCell” are included in a group of cells served by a SN with dual connectivity, have uplink component carriers, and have uplink control channels (e.g. PUCCH) means the cell for which the resource is configured.
- the term “primary SCG cell” and its abbreviation “PSCell” are provided by SNs supporting 5G NR (e.g. en-gNB in EN-DC, gNB in NGEN-DC, or gNB in NR-DC).
- 5G NR e.g. en-gNB in EN-DC, gNB in NGEN-DC, or gNB in NR-DC
- FIG. 2 shows another configuration example of a wireless communication system according to multiple embodiments.
- the wireless communication system includes RAN node 1, RAN node 2 and UE3.
- Each element (network function) shown in FIG. 2 can be, for example, a network element on dedicated hardware, a software instance running on dedicated hardware, or a virtualized function instantiated on an application platform. can be implemented as
- RAN node 1, RAN node 2, and UE 3 in the example of FIG. 2 may have configurations and functions similar to those in the example of FIG. Specifically, RAN node 1 and RAN node 2 communicate with each other via an inter-node interface (i.e., X2 interface or Xn interface) 103 . RAN node 1 and RAN node 2 act as dual connectivity MN and SN, respectively. UE3 communicates with MN1 and SN2 via air interfaces 101 and 102 and performs dual connectivity of MCG and SCG. This dual connectivity may be Multi-Radio Dual Connectivity (MR-DC).
- MR-DC Multi-Radio Dual Connectivity
- RAN nodes 1 and 2 and UE3 support Conditional PSCell Addition (CPA) to add the SCG provided by RAN node 2 for UE3. Therefore, in the following, RAN node 1 may be referred to as MN1, and RAN node 2 may be referred to as candidate SN2. CPA may be referred to as conditional SN addition. CPA (or conditional SN addition) is a PSCell addition procedure (or SN addition procedure) that is executed only when CPA execution conditions are met.
- CPA Conditional PSCell Addition
- multiple candidate PSCells provided by multiple candidate SN2s may be prepared for CPA.
- UE3 receives from MN1 one or more candidate PSCell configurations prepared by one or more candidate SNs and one or more CPA execution conditions associated therewith.
- each candidate PSCell configuration is an information element (IE) (e.g., condRRCReconfig) in the RRC message of MN1, and one or more candidate PSCell configurations and associated CPA execution conditions are specified by MN1.
- IE information element
- conditional mobility configuration information e.g., conditionalReconfiguration IE.
- the configuration of each candidate PSCell is generated by the candidate SN (e.g., candidate SN2) that provides (or prepares) this candidate PSCell.
- Configuration of each candidate PSCell includes at least configuration information for the candidate PSCell.
- Configuration of each candidate PSCell may further include configuration information for one or more SCells associated with the candidate PSCell (ie, configured together with or associated with the candidate PSCell).
- the configuration of each candidate PSCell may be one or any combination of RB configuration, CG configuration, SCG configuration, and SCG radio resource configuration. More specifically, the configuration of each candidate PSCell may be an SN RRC Reconfiguration message generated by the candidate SN (e.g., candidate SN2) that provides (or prepares) this candidate PSCell.
- a CPA configuration is a list of one or more MN RRC Reconfiguration messages.
- Each MN RRC Reconfiguration message includes configuration of candidate PSCells received from candidate SNs (e.g., one or any combination of RB configuration, CG configuration, SCG configuration, SCG radio resource configuration, and SN RRC Reconfiguration message). .
- CPA execution conditions are generated by MN1.
- a CPA execution condition may consist of one or more trigger conditions.
- the conditions or criteria that trigger a CPA event may be similar to those for measurement reporting events, eg CondEvent A3, CondEvent A4, or CondEvent A5.
- UE3 evaluates CPA execution conditions. If the execution condition of one candidate PSCell is satisfied, UE3 sets the PSCell corresponding to the selected candidate PSCell (i.e., the candidate PSCell whose execution condition is satisfied) (i.e., CG setting, SCG setting, SCG radio resource configuration or SN RRC Reconfiguration message). If a bearer requiring SCG radio resources is configured, UE3 synchronizes to the selected PSCell. If the execution conditions of two or more candidate PSCells are met, UE3 may select one from those candidate PSCells and perform the above operations.
- Intra-SN CPC may be referred to as SN-initiated Conditional SN Modification without MN involvement without MN involvement.
- Intra-SN CPC is an intra-SN PSCell change procedure that is executed only when CPC execution conditions are met.
- UE3 receives from SN2 the configuration of one or more candidate PSCells prepared by SN2 and one or more CPC execution conditions associated therewith.
- the configuration and associated CPC execution conditions for each candidate PSCell are included in the CPC configuration for intra-SN CPC.
- SN2 may send these to UE3 via MN1 or via a direct signaling radio bearer (i.e., Signaling Radio Bearer 3 (SRB3)) between SN2 and UE3 to UE3.
- SRB3 Signaling Radio Bearer 3
- each candidate PSCell configuration is an information element (IE) (e.g., condRRCReconfig) in the RRC message of SN2, and one or more candidate PSCell configurations and associated CPC execution conditions are specified by SN2.
- IE information element
- the configuration of each candidate PSCell includes at least configuration information for the candidate PSCell. Configuration of each candidate PSCell may further include configuration information for one or more SCells associated with the candidate PSCell (ie, configured together with or associated with the candidate PSCell).
- the configuration of each candidate PSCell may be radio bearer (RB) configuration, cell group (CG) configuration, SCG configuration, or SCG radio resource configuration, or any combination thereof.
- the configuration of each candidate PSCell may be an SN RRC Reconfiguration message generated by SN2.
- Intra-SN CPC CPC execution conditions may consist of one or more trigger conditions.
- the conditions or criteria that trigger a CPC event may be similar to those for measurement reporting events, eg CondEvent A3, CondEvent A4, or CondEvent A5.
- UE3 evaluates CPC execution conditions. If the execution condition of one candidate PSCell is satisfied, UE3 detaches from the source PSCell, applies the corresponding configuration to the selected candidate PSCell (i.e., the candidate PSCell whose execution condition is satisfied), and selects Synchronize with the candidate PSCell. If the execution conditions of two or more candidate PSCells are met, UE3 may select one from those candidate PSCells and perform the above operations.
- FIG. 3 shows still another configuration example of a wireless communication system according to multiple embodiments.
- the wireless communication system includes RAN node 6, RAN node 7 and UE3.
- Each element (network function) shown in FIG. 3 can be, for example, a network element on dedicated hardware, a software instance running on dedicated hardware, or a virtualized function instantiated on an application platform.
- Each of RAN nodes 6 and 7 may be an EUTRAN node or an NG-RAN node.
- EUTRAN nodes may be eNBs or en-gNBs.
- NG-RAN nodes may be gNBs or ng-eNBs.
- the RAT of RAN node 6 may be different from that of RAN node 7.
- a RAN node 6 provides at least one cell 61.
- a RAN node 7 serves one or more cells (e.g., four cells 71-74).
- cell 61 served by RAN node 6 is the current serving cell for UE3, and UE3 is handed over from cell 61 to any cell served by RAN node 7 . Therefore, RAN node 6 may be referred to as a source node or source RAN node in the following, and RAN node 7 may be referred to as a target node or target RAN node.
- Cell 61 is called the source cell.
- Source node 6, target node 7 and UE 3 support conditional handover (CHO). CHO is a handover procedure that is executed only when CHO execution conditions are met.
- multiple candidate target cells provided by multiple candidate target nodes 7 may be prepared for CHO.
- UE 3 sets one or more candidate target cells prepared by one or more candidate target nodes and one or more CHO execution conditions (e.g., condExecutionCond) associated with them. Receive from source node 6 .
- a configuration of one or more candidate target cells and associated CHO execution conditions is included in the CHO configuration. More specifically, each candidate target cell configuration is an information element (IE) (e.g., condRRCReconfig) of the RRC message of the source node 6, containing one or more candidate target cell configurations and associated CHO execution conditions. is included in the conditional mobility configuration information (e.g., conditionalReconfiguration IE) generated by the source node 6.
- IE information element
- conditional mobility configuration information e.g., conditionalReconfiguration IE
- the configuration of each candidate target cell is generated by the candidate target node (e.g., target node 7) that provides (or prepares) this candidate target cell.
- the configuration of each candidate target cell is a radio bearer (RB) configuration, radio resource configuration, or RRC Reconfiguration message generated by the candidate target node (e.g., target node 7) that provided (or prepared) this candidate target cell. , or any combination thereof.
- RB radio bearer
- the CHO execution condition is generated by the source node 6.
- a CHO execution condition may consist of one or more trigger conditions. The conditions or criteria that trigger a CHO event may be similar to those for measurement reporting events, eg CondEvent A3, CondEvent A4, or CondEvent A5.
- UE3 evaluates CHO execution conditions. Once the execution condition of one candidate target cell is satisfied, the UE 3 detaches from the source node 6 and applies the settings corresponding to the selected candidate target cell (i.e., the candidate target cell whose execution condition is satisfied). and synchronize to the selected candidate target cell. If the execution conditions for two or more candidate target cells are met, UE3 may select one from those candidate target cells and perform the above operations.
- One or more of RAN nodes 1, 2, 4, 6 and 7 may have the configuration shown in FIG.
- Each element (network function) shown in FIG. 4 can be, for example, a network element on dedicated hardware, a software instance running on dedicated hardware, or a virtualized function instantiated on an application platform.
- One or more of RAN nodes 1, 2, 4, 6, and 7 may include, but are not limited to, CU 41 and one or more DUs 42 as shown in FIG.
- An interface 401 connects between the CU 41 and each DU 42 .
- UE 3 is connected to at least one DU 42 via at least one air interface 402 .
- CU41 may be a logical node that hosts the gNB's Radio Resource Control (RRC), Service Data Adaptation Protocol (SDAP), and Packet Data Convergence Protocol (PDCP) protocols (or gNB's RRC and PDCP protocols).
- DU 42 may be a logical node that hosts the gNB's Radio Link Control (RLC), Medium Access Control (MAC), and Physical (PHY) layers. If CU 41 is a gNB-CU and DUs 42 are gNB-DUs, interface 401 may be an F1 interface.
- CU41 may include CU-CP and CU-UP.
- Conditional mobility is a generic term that refers to one or more of CHO, CPA, intra-SN CPC (or conditional SN modification), and inter-SN CPC (or conditional SN modification).
- conditional mobility improvements provide conditional mobility improvements to support a feature or mode of operation called “Multi-Radio Dual Connectivity (MR-DC) with selective activation of cell groups”.
- MR-DC Multi-Radio Dual Connectivity
- the feature or mode of operation herein may be applied to conditional mobility not necessarily with MR-DC, ie CHO.
- the feature or mode of operation may be applied to improved CHO where SCGs (at least PSCells) are added along with CHO execution.
- the function or mode of operation includes at least re-initialization of conditional mobility preparation, e.g., after changing or adding a serving cell, serving cell group, PSCell, or SCG in first conditional mobility.
- the function or mode of operation is, for example, the candidate target cell configuration or candidate PSCell configuration received from the network in the first conditional mobility (e.g., RB configuration, CG configuration, SCG configuration, radio resource configuration, and SCG radio resource configuration (one or any combination) for subsequent second conditional mobility.
- the conditions for the first conditional mobility may be reconfigured, updated or modified for the second conditional mobility.
- at least a part of the information on the configuration of security keys for the first conditional mobility e.g., sk-Counter, NextHop (NH), NH Chaining Count (NCC)
- security key information e.g.
- the second conditional mobility type may be different than the first conditional mobility type.
- the first conditional mobility may be CPA
- the second conditional mobility may be Inter-SN CPC or Intra-SN CPC.
- the first conditional mobility may be Inter-SN CPC
- the second conditional mobility may be Intra-SN CPC.
- Such functions or modes of operation include, but are not limited to, selective cell activation, selective cell group (CG) activation, selective SCG activation, adaptive cell switch, adaptive CG switch, adaptive SCG switch, subsequent cell change, subsequent CG change, subsequent CG May also be called selection, CPC keep, or CHO keep.
- the function or operation mode is called selective CG activation or selective cell activation in the following embodiments.
- the term selective CG activation may be used for conditional mobility with MR-DC (e.g., CPA, inter-SN CPC, intra-SN CPC).
- the term selective cell activation may be used for conditional mobility (e.g., CHO) that does not necessarily involve MR-DC.
- a combination of a candidate Special Cell (SpCell) and SCell(s) may be referred to as a candidate Cell Group (CG) set for conditional mobility or selective CG activation. Selective CG activation can also be viewed as changing or switching the serving SCG between multiple candidate CG sets.
- One candidate CG set contains at least candidate SpCells and optionally one or more SCells.
- a candidate cell (candidate SpCell) may be the current SCell (that is, the SCell included in the current SCG), or may be a non-serving cell that is not provided to UE3.
- UE3 may be configured with multiple candidate CG sets whose candidate SpCells are different from each other.
- Candidate SpCells are candidate PCells and multiple candidate CG sets are multiple candidate MCG sets if conditional mobility on MCG (e.g., CHO).
- conditional mobility on MCG e.g., CHO
- SCG e.g., CPA, intra-SN CPC, inter-SN CPC
- candidate SpCells are candidate PSCells and multiple candidate CG sets are multiple candidate SCG sets.
- MN RRC message MN RRC Reconfiguration message
- SN RRC message SN RRC Reconfiguration message
- SN RRC Reconfiguration message SN RRC Reconfiguration message
- This embodiment provides an improvement of CPA and inter-SN CPC for selective CG activation. Specifically, this embodiment relates to clarification of various procedures regarding selective CG/cell activation.
- a configuration example of the radio communication system according to this embodiment may be the same as the example shown in FIG. 1 or FIG.
- MN1 prepares whether or not to perform selective CG activation before sending the CPA request to candidate SN2 or before sending the CPC request to candidate (target) SN4. decision whether or not to recommend
- the CPC request may be sent by MN1 in response to MN1 deciding to initiate inter-SN CPC (ie, MN-initiated inter-SN CPC).
- the CPC request may be sent by MN1 in response to source SN2 deciding to initiate inter-SN CPC (ie, SN-initiated inter-SN CPC).
- a CPC request may be sent by MN1 in response to source SN2 deciding to initiate inter-SN CPC and requesting MN1 to perform it. Having decided to perform, use, prepare for, or recommend Selective CG activation, MN4 operates as shown in FIG.
- MN1 includes an indication regarding selective CG activation in the CPA request or CPC request message.
- MN1 sends the CPA request message or CPC request message to candidate SN2 or 4.
- the CPA Request message indicates that one or more candidate PSCells need to be prepared by the candidate SN2 for CPA.
- the CPC Request message indicates that one or more candidate PSCells need to be prepared by the candidate SN 4 for inter-SN CPC.
- the CPA request messages in steps 501 and 502 may be SN Addition Request messages for conditional SN addition.
- the CPA request may be indicated by the Conditional PSCell Addition Information Request IE.
- the CPC request message may be an SN Addition Request message for conditional SN modification.
- the CPC request may be indicated by the Conditional PSCell Addition Information Request IE or Conditional PSCell Change Information Request IE.
- the indication for Selective CG activation indicates to candidate SN2 or 4 that selective CG activation is required or recommended for subsequent CPCs after that CPA or inter-SN CPC. Subsequent CPCs may be inter-SN CPCs or intra-SN CPCs.
- An indication for Selective CG activation may be called, for example but not limited to, "Selective CG activation request", "CPC keep request", or "Store CPC request".
- the source SN2 determines whether to perform, use, prepare, or recommend selective CG activation. to decide. Having decided to perform, utilize, prepare for, or recommend Selective CG activation, the source SN2 operates as shown in FIG. In step 601, source SN2 includes an indication about selective CG activation in the SN Change Required message for conditional SN change. At step 602, source SN2 sends the SN Change Required message to MN1.
- the SN Change Required messages in steps 601 and 602 indicate one or more candidate PSCells recommended by source SN2 for inter-SN CPC.
- the fact that the message is for inter-SN CPC may be indicated by including Conditional PSCell Change Information Required IE in the message.
- the indication on Selective CG activation indicates to MN1 that selective CG activation is required or recommended for subsequent CPCs after this inter-SN CPC.
- Subsequent CPCs may be inter-SN CPCs or intra-SN CPCs.
- An indication for Selective CG activation may be called, for example but not limited to, "Selective CG activation required", "CPC keep required", or "Store CPC required".
- candidate SN 2 or 4 in response to receiving a CPA request or a CPC request from MN 1, decides whether to perform, use, prepare, or recommend selective CG activation. Decide whether to Candidate SNs 2 or 4 operate as shown in FIG.
- candidate SN2 or 4 receives a CPA Request or CPC Request message from MN1.
- the CPA Request message indicates that one or more candidate PSCells need to be prepared by the candidate SN2 for CPA.
- the CPC Request message indicates that one or more candidate PSCells need to be prepared by the candidate SN 4 for inter-SN CPC.
- the CPA Request message may be an SN Addition Request message for conditional SN addition.
- the CPC request message may be an SN Addition Request message for conditional SN modification.
- candidate SN2 or 4 accepts to prepare at least one of the one or more candidate PSCells requested by MN1.
- the candidate SN 2 or 4 decides whether to perform, utilize, prepare, or recommend selective CG activation. Having decided to perform, utilize, prepare for or recommend Selective CG activation, the candidate SN 2 or 4 includes an indication regarding the Selective CG activation in the CPA Request Acknowledge or CPC Request Acknowledge message.
- candidate SN2 or 4 sends the CPA Request Acknowledge or CPC Request Acknowledge message to MN1.
- the CPA Request Acknowledge or CPC Request Acknowledge messages in steps 702 and 703 indicate at least one candidate PSCell prepared by candidate SN2 or 4.
- the CPA Request Acknowledge message may be an SN Addition Request Acknowledge message for conditional SN addition.
- the CPC Request Acknowledge message may be a SN Addition Request Acknowledge message for conditional SN change.
- the indication on Selective CG activation indicates to MN1 that selective CG activation is required or recommended for subsequent CPCs after this CPA or inter-SN CPC. Subsequent CPCs may be inter-SN CPCs or intra-SN CPCs.
- Selective CG activation include, but are not limited to, "Selective CG activation request”, “Selective CG activation indication”, “CPC keep request”, “CPC keep indication”, “Store CPC request”, or “Store CPC indication” may be called
- whether the selected candidate SN 2 or 4 which provides the candidate PSCell selected by UE 3 in response to the CPA or CPC execution condition being satisfied, performs selective CG activation uses decide whether to prepare or not to recommend.
- the selected candidate SN2 or 4 operates as shown in FIG.
- candidate SN2 or 4 prepares for UE3 one or more candidate PSCells for CPA or inter-SN CPC.
- candidate SN2 or 4 prepares one or more candidate PSCells for conditional SN addition or change for UE3.
- candidate SN2 or 4 may exchange signaling with MN1 as with existing CPA or inter-SN CPC.
- candidate SN 2 or 4 may receive a CPA Request or CPC Request message from MN1 and send a CPA Request Acknowledge or CPC Request Acknowledge message to MN1.
- the CPA Request or CPC Request message may be an SN Addition Request message for conditional SN addition or modification.
- the CPA Request Acknowledge or CPC Request Acknowledge message may be an SN Addition Request Acknowledge message for conditional SN addition or modification.
- candidate SN2 or 4 sends an SN RRC message to UE3 containing an indication on selective CG activation if one of the one or more candidate PSCells is selected by UE3.
- the SN RRC message may be an SN RRC Reconfiguration message.
- the indication indicates to UE3 that selective CG activation is required or recommended for subsequent CPCs after that CPA or inter-SN CPC.
- Subsequent CPCs may also be intra-SN CPCs. In other words, the subsequent CPC, among the multiple candidate PSCells prepared for CPA or inter-SN CPC by the selected candidate SN2 or 4, other one or more candidates not selected by UE3 It may be intra-SN CPC to PSCell.
- Indications regarding Selective CG activation may be called, for example but not limited to, "Selective CG activation indication", "CPC keep indication”, "Store CPC indication”, or "Keep unused CPC configuration indication”.
- Fig. 9 shows an example of signaling of the CPC preparation phase in the inter-SN CPC (or conditional SN change) procedure.
- source SN2 sends an SN Change Required message to MN1 when source SN2 initiates inter-SN CPC.
- the SN Change Required message contains a list of proposed PSCell candidates recommended by source SN2 and the associated CPC conditions.
- step 901 is omitted.
- MN1 sends an SN Addition Request message to each of one or more candidate targets SN4 (e.g., SN4A and 4B).
- the SN Addition Request message contains a list of PSCell candidates.
- the list indicates one or more candidate PSCells proposed by MN1 in case of MN-initiated inter-SN CPC or one or more proposed by source SN2 in case of SN-initiated inter-SN CPC shows the candidate PSCells of
- each candidate target SN4 sends an SN Addition Request Acknowledge message to MN1.
- the SN Addition Request Acknowledge message contains the configuration of each of the one or more candidate PSCells provisioned by the candidate target SN4.
- the configuration of each candidate PSCell may be one or any combination of RB configuration, CG configuration, SCG configuration, SCG radio resource configuration, and SN RRC Reconfiguration message.
- step 904 or steps 904 and 905 may be performed.
- MN1 optionally forwards one or more candidate PSCells accepted by candidate target SN4 to source SN2, e.g., if candidate target SN4 has not accepted all candidate PSCells proposed by source SN2.
- source SN2 may provide updated or modified settings for CPC (e.g., measurement settings, or CPC execution conditions) to MN1.
- MN1 sends to UE3 an MN RRC Reconfiguration message (RRC Reconfiguration*) containing CPC settings (e.g., condRRCReconfig) and associated CPC execution conditions (conditions).
- the CPC configuration of Inter-SN CPC is a list of one or more MN RRC Reconfiguration messages (RRC Reconfiguration**).
- Each MN RRC Reconfiguration message (RRC Reconfiguration**) contains the candidate PSCell configuration (i.e., SN RRC Reconfiguration message (RRC Reconfiguration***)) received from the candidate SN.
- CPC configurations i.e., list of MN RRC Reconfiguration messages (RRC Reconfiguration**)
- CPC execution conditions are specified in conditional mobility configuration information (e.g., conditionalReconfiguration IE) within MN RRC Reconfiguration messages (RRC Reconfiguration*). subsumed.
- conditional mobility configuration information e.g., conditionalReconfiguration IE
- MN1 includes an indication regarding selective CG activation in the SN Addition Request message (step 902), as shown in FIG. 9 as Option 1.
- the candidate target SN4 may include an indication in the SN Addition Request Acknowledge message (step 903) indicating whether the selective CG activation is accepted.
- source SN2 includes an indication regarding selective CG activation in the SN Change Required message (step 901), as shown in FIG. 9 as option 2.
- MN1 may include an indication regarding selective CG activation in the SN Addition Request message (step 902).
- the candidate target SN4 may include an indication in the SN Addition Request Acknowledge message (step 903) indicating whether the selective CG activation is accepted.
- MN1 may indicate to source SN2, for example in step 904, whether the selective CG activation requested, recommended or proposed by source SN2 has been accepted.
- candidate target SN4 includes an indication regarding selective CG activation in the SN Addition Request Acknowledge message (step 903), as shown in FIG. 9 as option 3.
- MN1 may indicate to candidate target SN4 whether selective CG activation is acceptable.
- MN1 may send a control message (e.g., Xn or X2 message) indicating acceptance or rejection of selective CG activation to candidate target SN4.
- the control message may be sent only if MN1 accepts the selective CG activation requested, recommended or proposed by candidate target SN4, or if MN1 rejects it. .
- Steps 1001 and 1002 of FIG. 10 are identical to steps 902 and 903 of FIG.
- the MN RRC Reconfiguration message of step 906 may include an indication regarding selective CG activation.
- MN1 may inform UE3 that selective CG activation is required, recommended, or available via the MN RRC Reconfiguration message in step 906.
- this indication is generated by MN1 and may be one of the information elements (IEs) in the MN RRC Reconfiguration message.
- this indication is generated by source SN2 and sent from source SN2 to MN1 via the SN RRC Information Element (IE) or SN RRC Reconfiguration and incorporated into the MN RRC Reconfiguration message. may be embedded.
- this indication may be generated by candidate SN4 and sent from source SN2 to MN1 via SN RRC IE or SN RRC Reconfiguration and incorporated into the MN RRC Reconfiguration message.
- FIG. 11 shows an example of signaling of the inter-SN CPC (or conditional SN change) procedure for the fourth implementation described above.
- MN1, source SN2, and one or more candidate targets SN4 (e.g., candidate targets SN4A and 4B) prepare inter-SN CPC.
- MN1 sends to UE3 an MN RRC Reconfiguration message (RRC Reconfiguration*) containing CPC settings and associated CPC execution conditions.
- the MN RRC Reconfiguration message in step 1102 indicates inter-SN CPC.
- the MN RRC Reconfiguration message indicates that selective CG activation is scheduled, predicted, or possible for subsequent intra-SN or inter-SN CPC after inter-SN CPC. may be indicated to UE3.
- step 1103 if the execution condition of one of the prepared candidate PSCells is met, the UE 3 CPC by applying the configuration of the selected candidate PSCell (i.e., the candidate PSCell whose execution condition is met). (that is, change SN or change PSCell).
- UE3 selects any of one or more candidate PSCells provisioned by candidate target SN4A. Note that the UE 3 maintains or retains the CPC execution conditions associated with the configuration of one or more other candidate PSCells without releasing them after the CPC execution conditions are established. UE3 may selectively maintain or retain only the configuration of one or more other candidate PSCells prepared by the selected candidate SN4A. UE3 may act in this way if the MN RRC Reconfiguration message of step 1102 indicates the schedule, prediction, or possibility of selective CG activation.
- the selected candidate SN4A sends an SN RRC message containing an indication regarding selective CG activation to UE3.
- the SN RRC message may be an SN RRC Reconfiguration message.
- the indication indicates to UE3 that selective CG activation is required or recommended for subsequent CPCs after that inter-SN CPC. Subsequent CPCs may also be intra-SN CPCs.
- UE3 maintains or retains the unused CPC settings (i.e., candidate PSCell settings) for subsequent CPC (step 1105).
- UE3 may selectively maintain or retain only the configuration of one or more other candidate PSCells prepared by the selected candidate SN4A.
- UE3 may also maintain or retain associated CPC execution conditions in addition to unused CPC settings. If the indication of step 1104 has not been received, UE 3 may release the CPC settings (and CPC execution conditions) that were provisionally maintained or held.
- candidate SN4A (or 4B) performs selective CG activation for other candidate PSCells provided by the candidate SN4A (or 4B)
- candidate SN 4A (or 4B) may notify when it sends configuration information for inter-SN CPC to UE3 via MN1.
- the configuration information for inter-SN CPC of the candidate PSCell that was not selected ( temporarily) may be retained.
- UE3 autonomously activates inter-SN Setting information for CPC may be (temporarily) held.
- FIG. 12 shows an example of signaling of the inter-SN CPC (or conditional SN change) procedure according to this embodiment.
- MN1 selects candidate SN4 (selected candidate SN4) (e.g., 4A) that provides the candidate PSCell selected by UE3, and candidates prepared by other candidate SN4 (e.g., 4B) to which selective CG activation is applied PSCell(s) may be notified.
- the selected candidate SN4 e.g., 4A
- the selected candidate SN4 may send updated measurement settings and/or execution conditions to UE3 via MN1.
- MN1 may select non-selected candidate target SN4 (e.g., 4B) to apply (or impose) selective CG activation to other candidate SN4 (e.g., 4A). ) may inform the candidate PSCell(s) prepared by the UE. Based on this information, non-selected candidate SNs 4 (e.g., 4B) may update their measurement settings or CPC execution conditions or both. The non-selected candidate SN4 (e.g., 4B) may send updated measurement settings and/or execution conditions to UE3 via MN1.
- non-selected candidate target SN4 e.g., 4B
- MN1 informs source SN2 of candidate PSCell(s) prepared by other candidate SNs 4 (e.g., 4A and 4B) to which selective CG activation is applied (or imposed). good too. This may be done when selective CG activation is applied or imposed on the previous serving PSCell that was served by source SN2. Based on this information, the source SN2 may update measurement settings and generate CPC execution conditions. Source SN2 may send the updated measurement configuration and/or generated execution conditions to UE3 via MN1.
- inter-SN CPC is prepared.
- UE3 evaluates CPC execution conditions. If the execution condition of one candidate PSCell is satisfied, UE3 sends a corresponding MN RRC Reconfiguration Complete message to MN1 (step 1203).
- This MN RRC Reconfiguration Complete message includes SN RRC Reconfiguration Complete messages for candidate PSCells whose execution conditions have been satisfied (that is, selected candidate PSCells), and further includes information on the selected candidate PSCells.
- the information of the selected candidate PSCell may be implicitly (or indirectly) indicated by the identifier (e.g.CondReconfigId) associated with the configuration of the candidate PSCell and the CPC execution condition (e.g.condExecutionCond or condExecutionCondSN).
- the identifier e.g.CondReconfigId
- the CPC execution condition e.g.condExecutionCond or condExecutionCondSN.
- MN1 may inform the selected candidate SN4 (e.g., 4A) of candidate PSCell(s) prepared by other candidate SN4 (e.g., 4B) to which selective CG activation is applied.
- candidate SN4 e.g., 4A
- candidate SN4 e.g., 4B
- an existing SN Reconfiguration Complete message containing the SN RRC Reconfiguration Complete message for the selected candidate PSCell may be reused or extended.
- a new Xn/X2 message may be defined for transmission in step 1204 .
- MN1 may inform non-selected candidate SNs 4 (e.g., 4B) of candidate PSCell(s) prepared by other candidate SNs 4 (e.g., 4A) to which selective CG activation is applied.
- An existing Xn/X2 message for CPC Cancel e.g., CPC Cancel, SN Release Request, or UE Context Release
- CPC Cancel e.g., CPC Cancel, SN Release Request, or UE Context Release
- a new Xn/X2 message may be defined for transmission in step 1205.
- MN1 may inform source SN2 of candidate PSCell(s) prepared by other candidate SN4 (e.g., 4A and 4B) to which selective CG activation is applied.
- An existing Xn/X2 message for UE context release (e.g., UE Context Release) may be reused or extended for the transmission of step 1206 .
- a new Xn/X2 message may be defined for transmission in step 1206. Note that the order of steps 1204 to 1206 is not limited.
- MN1, source SN2, candidate SN4 and UE3 may be modified as follows.
- selective CG activation may be applied or imposed on the previous serving PSCell that was served by source SN2.
- UE3 maintains the previous serving PSCell configuration for reuse in subsequent CPC after inter-SN CPC is completed.
- MN1 may inform source SN2 that selective CG activation is applied to the source PSCell or is required.
- source SN2 may inform MN1 that selective CG activation is or can be applied to the source PSCell.
- source SN2 may include an indication in the SN Change Required message of step 901 of FIG. 9 indicating the application of selective CG activation to the source PSCell.
- the indication may be, but is not limited to, "S-SN keep” or "Source PSCell keep”.
- MN1 may inform candidate SN4 that selective CG activation is applied to the source PSCell or is required.
- MN1 may include an indication in the SN Addition Request message of step 902 of FIG. 9 indicating the application of selective CG activation to the source PSCell.
- the display may be, but is not limited to, "S-SN keep”.
- MN1 resets, updates, or modifies security key information (e.g., SN Security Key) for selective CG activation and sends it to candidate SN4 (e.g., 4A) selected by UE3 in inter-SN CPC You may For example, MN1 may send security key information to the selected candidate SN4 (e.g., 4A) in a message that is the same as or different from the message in step 1204 . In addition, MN1 resets, updates, or modifies at least part of the information on security key configuration (e.g., sk-Counter, NextHop (NH), NH Chaining Count (NCC)) for selective CG activation. , may be sent to UE3.
- security key configuration e.g., sk-Counter, NextHop (NH), NH Chaining Count (NCC)
- MN1 resets, updates, or modifies security key information (e.g., SN Security Key) for selective CG activation to candidate SN4 (e.g., 4B) that was not selected by UE3 in inter-SN CPC You may send.
- MN1 may send security key information to non-selected candidate SN4 (e.g., 4B) in a message that is the same as or different from the message in step 1205 .
- MN1 resets, updates, or modifies at least part of the information on security key configuration (e.g., sk-Counter, NextHop (NH), NH Chaining Count (NCC)) for selective CG activation. , may be sent to UE3.
- security key configuration e.g., sk-Counter, NextHop (NH), NH Chaining Count (NCC)
- MN1, Source SN2 (or Candidate SN2 at CPA), Candidate SN4, and UE3 operations and procedures described in this embodiment allow selective CG activation for CPA and inter-SN CPC It can contribute to the clarification of procedures for Specifically, these are by which node (e.g., MN, source SN, or candidate SN) the decision to use selective CG activation for CPA and inter-SN CPC is made, and Clarify when this decision will be made.
- node e.g., MN, source SN, or candidate SN
- This embodiment provides an improvement of CPA and inter-SN CPC for selective CG activation.
- This embodiment relates to reusing multiple candidate PSCell configurations for CPA or Inter-SN CPC (or conditional SN change) for subsequent CPC.
- a configuration example of the radio communication system according to this embodiment may be the same as the example shown in FIG. 1 or FIG.
- UE3 configures all of one or more candidate PSCells other than the selected one candidate PSCell among multiple candidate PSCell configurations for CPA or inter-SN CPC. Maintain or retain for CPC.
- the configuration of each candidate PSCell may be one or any combination of RB configuration, CG configuration, SCG configuration, SCG radio resource configuration, and SN RRC Reconfiguration message.
- UE3 may also maintain or retain the associated CPA or CPC execution conditions as CPC execution conditions for subsequent CPCs.
- UE3 may update or modify one or more CPC execution conditions in response to instructions from MN1 or candidate SN2 or 4, or autonomously.
- UE3 selects the reference cell in one or more CPC execution conditions (e.g., CondEvent A3 or CondEvent A5) from the source cell of the first CPC (i.e., the serving PSCell provided by source SN2) It may switch to the selected PSCell provided by candidate SN2 or 4.
- CPC execution conditions e.g., CondEvent A3 or CondEvent A5
- UE3 only configures the other one or more candidate PSCells provided by the selected candidate SN2 or 4 that provides the selected candidate PSCells in the first CPA or CPC.
- the subsequent CPC is the intra-SN CPC within the selected candidate SN2 or 4.
- the configuration of each candidate PSCell may be one or any combination of RB configuration, CG configuration, SCG configuration, SCG radio resource configuration, and SN RRC Reconfiguration message.
- UE3 may maintain or retain the associated CPC execution conditions for subsequent CPCs.
- UE3 may update or modify one or more CPC execution conditions in response to instructions from MN1 or candidate SN2 or 4, or autonomously.
- UE3 selects one or more candidate PSCells specified by MN1 or one or more candidate SN2 or 4 among the candidate PSCells other than the candidate PSCells selected in the first CPA or CPC. settings are selectively maintained or retained for subsequent CPCs.
- the configuration of each candidate PSCell may be one or any combination of RB configuration, CG configuration, SCG configuration, SCG radio resource configuration, and SN RRC Reconfiguration message. Similar to the first implementation, UE3 may maintain or retain the associated CPC execution conditions for subsequent CPCs. UE3 may update or modify one or more CPC execution conditions in response to instructions from MN1 or candidate SN2 or 4, or autonomously.
- FIG. 13 shows an example of the operation of UE3 in the second implementation.
- UE3 receives configuration of multiple candidate PSCells provided by multiple candidate SNs 2 or 4 for conditional SN addition (i.e., CPA) or SN change (i.e., inter-SN CPC) from MN1. do.
- UE3 also receives from MN1 multiple CPC execution conditions associated with multiple candidate PSCells.
- UE3 evaluates multiple CPC execution conditions. If the execution condition for one of multiple candidate PSCells is satisfied, UE3 applies the configuration corresponding to the selected candidate PSCell (i.e., the candidate PSCell whose execution condition is satisfied).
- UE 3 only configures one or more other candidate PSCells provided by the selected candidate SN 2 or 4 that provide the selected candidate PSCells in subsequent conditional PSCell changes (i.e., intra -SN CPC) selectively maintained.
- FIG. 14 shows an example of the operation of UE3 in the third implementation.
- Steps 1401 and 1402 are identical to steps 1301 and 1302 of FIG.
- UE3 configures one or more candidate PSCells specified by MN1 or one or more candidate SNs 2 or 4, among a plurality of candidate PSCells other than the selected candidate PSCells, following conditions Selectively maintained for PSCell changes with attached (i.e., inter-SN CPC).
- FIG. 15 shows an example of signaling of the CPC preparation phase in the inter-SN CPC (or conditional SN change) procedure for the third implementation described above.
- the basic role and structure of the messages in steps 1501-1504 are similar to the messages in steps 901-903 and 906 of FIG.
- each candidate SN 4 includes an indication of selective CG activation for each candidate PSCell in the SN Addition Request Acknowledge message.
- each candidate SN4 indicates to MN1 for each candidate PSCell whether selective CG activation is required, recommended or offered.
- MN1 may include an indication of selective CG activation for each candidate PSCell in the MN RRC Reconfiguration message.
- MN1 may indicate to UE3 whether selective CG activation is recommended, proposed, or available for each candidate PSCell.
- MN1 may inform other candidate SN4 (e.g., 4B) of at least one candidate PSCell of candidate SN4 (e.g., 4A) to which selective CG activation is applied.
- MN1, candidate SN2 or 4, and UE3 described in this embodiment can contribute to clarification of procedures for enabling selective CG activation. Specifically, they can clarify which of multiple candidate PSCell configurations for CPA or Inter-SN CPC (or conditional SN change) UE3 reuses for subsequent CPC. .
- This embodiment provides an improvement of CHO for selective CG activation. Specifically, this embodiment relates to clarification of various procedures regarding selective CG/cell activation.
- a configuration example of the wireless communication system according to this embodiment may be the same as the example shown in FIG.
- the source node 6 before the source node 6 sends the CHO request to the candidate target node 7, it is determined whether to perform, utilize, prepare, or recommend selective cell activation. decide. Having decided to perform, utilize, prepare for, or recommend selective cell activation, the source node 6 operates as shown in FIG.
- the source node 6 includes an indication regarding selective cell activation in the CHO request message.
- the source node 6 sends the CHO request message to the candidate target node 7 .
- the CHO request message indicates that one or more candidate target cells need to be prepared by candidate target nodes 7 for CHO.
- the indication regarding selective cell activation indicates to candidate target nodes 7 that selective cell activation is required or recommended for subsequent CHOs after this CHO.
- An indication for Selective cell activation may be called, for example but not limited to, "Selective cell activation request", "CHO keep request”, or "Store CHO request”.
- the candidate target node 7 in response to receiving a CHO request from the source node 6, performs, utilizes, prepares, or recommends selective cell activation. Decide whether or not A candidate target node 7 operates as shown in FIG.
- the candidate target node 7 receives a CHO request message from the source node 6 .
- the CHO request message indicates that one or more candidate cells (i.e., candidate target cells) need to be prepared by candidate target nodes 7 for CHO.
- the candidate target node 7 accepts to prepare at least one of the one or more candidate target cells requested by the source node 6 .
- the candidate target node 7 decides whether to perform, utilize, prepare for, or recommend selective cell activation. Having decided to perform, utilize, prepare for or recommend selective cell activation, the candidate target node 7 includes an indication regarding the selective cell activation in the CHO request acknowledgment message.
- the candidate target node 7 sends the CHO Request Acknowledge message to the source node 6 .
- the CHO request acknowledgment messages of steps 1702 and 1703 indicate at least one candidate target cell prepared by candidate target node 7.
- the indication regarding selective cell activation indicates to the source node 6 that selective cell activation is required or recommended for subsequent CHOs after this CHO.
- Indications regarding Selective cell activation include, but are not limited to, "Selective cell activation request”, “Selective cell activation indication”, "CHO keep request”, “CHO keep indication”, "Store CHO request", or "Store CHO indication” may be called
- the selected candidate target node 7 operates as shown in FIG.
- candidate target node 7 prepares one or more candidate target cells for CHO for UE3.
- the candidate target node 7 may exchange signaling with the source node 6 as with existing CHOs. Specifically, candidate target node 7 may receive a CHO Request message from source node 6 and send a CHO Request Acknowledge message to source node 6 .
- the candidate target node 7 sends an RRC message to UE3 containing an indication on selective cell activation if one of the one or more candidate target cells has been selected by UE3.
- the RRC message may be an RRC Reconfiguration message.
- the indication indicates to UE3 that selective cell activation is required or recommended for subsequent CHOs after this CHO.
- Subsequent CHOs are CHOs to other one or more candidate target cells not selected by UE 3 among the plurality of candidate target cells prepared for CHO by the selected candidate target node 7.
- may Indications regarding Selective cell activation may be called, for example, but not limited to, "Selective cell activation indication", "CHO keep indication", "Store CHO indication", or "Keep unused CHO configuration indication".
- Fig. 19 shows an example of signaling of the CHO preparation phase in the CHO procedure.
- source node 6 sends a CHO Request message to each of one or more candidate target nodes 7 (e.g., 7A and 7B).
- the CHO Request message contains a list of target cell candidates. The list indicates one or more candidate target cells proposed by source node 6 .
- a CHO Request message may be a Handover Request message containing a Conditional Handover Information Request IE.
- each candidate target node 7 sends a CHO Request Acknowledge message to the source node 6 .
- the CHO Request Acknowledge message contains the configuration of each of the one or more candidate target cells provisioned by the candidate target node 7.
- the configuration of each candidate target cell may be a radio resource configuration or an RRC Reconfiguration message.
- the CHO Request Acknowledge message may be a Handover Request Acknowledge message including Conditional Handover Information Acknowledge.
- the source node 6 transmits an RRC Reconfiguration message including CHO settings to UE3.
- the CHO settings include the candidate target cell settings generated by the candidate target node 7 and the CHO execution conditions generated by the source node 6 .
- the source node 6 includes an indication regarding selective cell activation in the CHO Request message (step 1901).
- the candidate target node 7 may include an indication in the CHO Request Acknowledge message (step 1902) indicating whether selective cell activation is acceptable.
- the candidate target node 7 includes an indication regarding selective cell activation in the CHO Request Acknowledge message (step 1902), as shown in FIG. 19 as option 2.
- the RRC Reconfiguration message of step 1903 may include an indication regarding selective cell activation.
- source node 6 may inform UE 3 that selective cell activation is required, recommended or available via the RRC Reconfiguration message of step 1903 .
- FIG. 20 shows an example of CHO procedure signaling for the third implementation described above.
- the source node 6 and one or more target nodes 7 prepare CHO.
- the source node 6 transmits an RRC Reconfiguration message including CHO setting to UE3.
- the RRC Reconfiguration message in step 2002 indicates CHO.
- the RRC Reconfiguration message may indicate to UE3 that selective cell activation is scheduled, predicted, or possible for subsequent CHOs after this CHO.
- step 2003 if the execution condition of one of the prepared candidate target cells is met, UE3 performs CHO by applying the configuration of the selected candidate target cell.
- UE 3 selects any of one or more candidate target cells provisioned by candidate target node 7A.
- the UE 3 maintains or retains the CHO execution conditions associated with the setting of one or more other candidate target cells after the establishment of the CHO execution conditions without releasing them.
- the UE 3 may selectively maintain or retain only the other one or more candidate target cell configurations provisioned by the selected candidate target node 7A.
- UE 3 may act in this manner if the RRC Reconfiguration message of step 2002 indicates a schedule, prediction, or possibility of selective cell activation.
- the selected candidate target node 7A sends an RRC message containing an indication regarding selective cell activation to UE3.
- the indication indicates to UE3 that selective cell activation is required or recommended for subsequent CHOs after this CHO.
- UE3 maintains or retains the unused CHO settings (i.e., candidate target cell settings) for subsequent CHO (step 2005).
- the UE 3 may selectively maintain or retain only the other one or more candidate target cell configurations provisioned by the selected candidate target node 7A.
- UE3 may also maintain or retain the associated CHO execution conditions. If the indication of step 2004 has not been received, UE 3 may release the provisionally maintained or retained CHO configuration.
- the operations of the source node 6, target node 7, and UE 3 described above may be modified as follows.
- the source node 6 may inform the candidate target node 7 (e.g., 7A) selected by the UE 3 of candidate target cells prepared by other candidate target nodes 7 (e.g., 7B) to which selective cell activation is applied. good.
- the selected candidate target nodes 7 e.g., 7A
- the selected candidate target nodes 7 may send updated measurement settings and/or performance conditions to the UE3.
- source node 6, target node 7, and UE 3 may be modified as follows.
- selective cell activation may be applied or imposed on the previous serving cell that was served by source node 6 .
- UE3 maintains the previous serving cell configuration for reuse in subsequent CHO after CHO is completed.
- the source node 6 may inform the candidate target nodes 7 that selective cell activation is applied to the source cell or is required.
- source node 6 may include an indication in the CHO Request message of step 1902 of FIG. 19 indicating the application of selective cell activation to the source cell.
- the display may be, but is not limited to, "Source cell keep".
- the operations and procedures of the source node 6, target node 7, and UE 3 described in this embodiment can contribute to clarifying the procedure for enabling selective cell activation for CHO. Specifically, they indicate by which node (e.g., source node or target node) the decision to use selective cell activation for the CHO is made, and when this decision is made. I can clarify.
- node e.g., source node or target node
- This embodiment provides an improvement of CHO for selective cell activation.
- This embodiment relates to reusing multiple candidate target cell settings for a CHO for subsequent CHOs.
- a configuration example of the wireless communication system according to this embodiment may be the same as the example shown in FIG.
- UE3 among multiple candidate target cell settings for CHO, all settings of one or more candidate target cells other than the selected one candidate target cell, of subsequent CHO maintain or retain for
- the configuration of each candidate target cell may be a radio resource configuration or an RRC Reconfiguration message.
- UE3 may also maintain or retain the associated CHO execution conditions for subsequent CHOs.
- the UE 3 may update or modify one or more CHO execution conditions upon instruction from the selected candidate target node 7 or autonomously. For example, UE3 selects a reference cell in one or more CHO execution conditions (e.g., CondEvent A3 or CondEvent A5) from the first CHO's source cell (i.e., serving cell 61 served by source node 6). It may switch to the selected target cell (e.g., cell 71) served by the candidate target node 7 that was selected, ie the new serving cell.
- a reference cell in one or more CHO execution conditions e.g., CondEvent A3 or CondEvent A5
- the UE 3 only configures one or more other candidate target cells provided by the selected candidate target node 7 that provides the candidate target cells selected in the first CHO. Selectively maintain or retain for subsequent CHO after one CHO. Therefore, in the second implementation, the subsequent CHOs are CHOs within the selected candidate target node 7 .
- the configuration of each candidate target cell may be a radio resource configuration or an RRC Reconfiguration message.
- UE3 may maintain or retain the associated CHO execution conditions for subsequent CHOs. The UE 3 may update or modify one or more CHO execution conditions upon instruction from the selected candidate target node 7 or autonomously.
- the UE 3 selects one or more of the candidate target cells other than the candidate target cells selected in the first CHO, specified by the source node 6 or one or more candidate target nodes 7.
- the configuration of candidate target cells is selectively maintained or retained for subsequent CHOs.
- the configuration of each candidate target cell may be a radio resource configuration or an RRC Reconfiguration message. Similar to the first implementation, UE3 may maintain or retain the associated CHO execution conditions for subsequent CHOs.
- the UE 3 may update or modify one or more CPC execution conditions in response to instructions from the selected candidate target node 7 or autonomously.
- FIG. 21 shows an example of the operation of UE3 in the second implementation.
- the UE 3 receives from the source node 6 configurations of multiple candidate target cells provided by multiple candidate target nodes 7 for the CGO.
- UE 3 also receives from source node 6 multiple CHO execution conditions associated with multiple candidate target cells.
- UE3 evaluates multiple CHO execution conditions. If the execution condition of one of the multiple candidate target cells is satisfied, UE3 applies the corresponding settings to the selected candidate target cell (i.e., the candidate target cell whose execution condition is satisfied).
- the UE 3 selectively configures only one or more other candidate PSCells provided by the selected candidate target node 7 that provides the selected candidate target cell for subsequent CHO. maintain.
- FIG. 22 shows an example of the operation of UE3 in the third implementation.
- Steps 2201 and 2202 are identical to steps 2101 and 2102 of FIG.
- the UE 3 sets one or more candidate target cells designated by the source node 6 or one or more candidate target nodes 7 among a plurality of candidate target cells other than the selected candidate target cell. is selectively maintained for subsequent CHO.
- FIG. 23 shows an example of signaling of the CHO preparation phase in the CHO procedure for the third implementation described above.
- the basic role and structure of the messages in steps 2301 to 2303 are the same as the messages in steps 1901 to 1903 of FIG.
- each candidate target node 7 includes an indication of selective cell activation for each candidate target cell in the CHO Request Acknowledge message.
- each candidate target node 7 indicates to the source node 6 whether selective cell activation is required, recommended or proposed for each candidate target cell.
- the source node 6 may include an indication of selective cell activation for each candidate target cell in the RRC Reconfiguration message. In other words, source node 6 may indicate to UE 3 whether selective cell activation is recommended, offered or available for each candidate target cell.
- the source node 6 selects at least one candidate target cell of the candidate target node 7 (e.g., 7A) to which selective cell activation is applied, and the other candidate target node 7 (e.g., 7B). ) may be notified.
- the operations and procedures of the source node 6, target node 7, and UE 3 described in this embodiment can contribute to clarification of the procedures for enabling selective cell activation. Specifically, they can clarify which of multiple candidate target cell configurations for a CHO UE3 will reuse for subsequent CHOs.
- FIG. 24 is a block diagram showing a configuration example of the RAN node 1 according to the embodiment described above.
- the configurations of other RAN nodes 2, 4, 6, and 7 may also be similar to the configuration shown in FIG.
- RAN node 1 includes Radio Frequency transceiver 2401 , network interface 2403 , processor 2404 and memory 2405 .
- RF transceiver 2401 performs analog RF signal processing to communicate with UEs, including UE3.
- RF transceiver 2401 may include multiple transceivers.
- RF transceiver 2401 is coupled to antenna array 2402 and processor 2404 .
- RF transceiver 2401 receives modulation symbol data from processor 2404 , generates transmit RF signals, and provides transmit RF signals to antenna array 2402 .
- RF transceiver 2401 also generates baseband received signals based on the received RF signals received by antenna array 2402 and provides them to processor 2404 .
- RF transceiver 2401 may include analog beamformer circuitry for beamforming.
- the analog beamformer circuit includes, for example, multiple phase shifters and multiple power amplifiers.
- the network interface 2403 is used to communicate with network nodes (e.g. RAN nodes 2 and 4, and control and forwarding nodes of the core network).
- Network interface 2403 may include, for example, an IEEE 802.3 series compliant network interface card (NIC).
- NIC network interface card
- a processor 2404 performs digital baseband signal processing (data plane processing) and control plane processing for wireless communication.
- Processor 2404 may include multiple processors.
- the processor 2404 includes a modem processor (e.g. Digital Signal Processor (DSP)) that performs digital baseband signal processing and a protocol stack processor (e.g. Central Processing Unit (CPU) or Micro Processing Unit (MPU) that performs control plane processing). ) may be included.
- DSP Digital Signal Processor
- MPU Micro Processing Unit
- digital baseband signal processing by processor 2404 includes a Service Data Adaptation Protocol (SDAP) layer, a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY ) layer signal processing.
- SDAP Service Data Adaptation Protocol
- PDCP Packet Data Convergence Protocol
- RLC Radio Link Control
- MAC Medium Access Control
- PHY Physical
- Control plane processing by processor 2404 may also include processing of Non-Access Stratum (NAS) messages, RRC messages, MAC Control Elements (CE), and Downlink Control Information (DCI).
- NAS Non-Access Stratum
- RRC Radio Link Control
- CE MAC Control Elements
- DCI Downlink Control Information
- the processor 2404 may include a digital beamformer module for beamforming.
- a digital beamformer module may include a Multiple Input Multiple Output (MIMO) encoder and precoder.
- MIMO Multiple Input Multiple Output
- the memory 2405 is composed of a combination of volatile memory and non-volatile memory. Volatile memory is, for example, Static Random Access Memory (SRAM) or Dynamic RAM (DRAM) or a combination thereof. The non-volatile memory is masked Read Only Memory (MROM), Electrically Erasable Programmable ROM (EEPROM), flash memory, or hard disk drive, or any combination thereof. Memory 2405 may include storage remotely located from processor 2404 . In this case, processor 2404 may access memory 2405 via network interface 2403 or an I/O interface (not shown).
- SRAM Static Random Access Memory
- DRAM Dynamic RAM
- EEPROM Electrically Erasable Programmable ROM
- flash memory or hard disk drive, or any combination thereof.
- Memory 2405 may include storage remotely located from processor 2404 . In this case, processor 2404 may access memory 2405 via network interface 2403 or an I/O interface (not shown).
- Memory 2405 may store one or more software modules (computer programs) 2406 containing instructions and data for processing by RAN node 1 as described in the above embodiments.
- the processor 2404 may be configured to retrieve and execute the software module 2406 from the memory 2405 to perform the RAN node 1 processing described in the above embodiments.
- the RAN node 1 may not include the RF transceiver 2401 (and the antenna array 2402).
- FIG. 25 is a block diagram showing a configuration example of UE3.
- Radio Frequency (RF) transceiver 2501 performs analog RF signal processing to communicate with RAN nodes 1, 2, 4, 6, and 7.
- RF transceiver 2501 may include multiple transceivers. Analog RF signal processing performed by RF transceiver 2501 includes frequency upconversion, frequency downconversion, and amplification.
- RF transceiver 2501 is coupled with antenna array 2502 and baseband processor 2503 .
- RF transceiver 2501 receives modulation symbol data (or OFDM symbol data) from baseband processor 2503 , generates transmit RF signals, and provides transmit RF signals to antenna array 2502 .
- RF transceiver 2501 also generates baseband received signals based on the received RF signals received by antenna array 2502 and provides them to baseband processor 2503 .
- RF transceiver 2501 may include analog beamformer circuitry for beamforming.
- the analog beamformer circuit includes, for example, multiple phase shifters and multiple power amplifiers.
- the baseband processor 2503 performs digital baseband signal processing (data plane processing) and control plane processing for wireless communication.
- Digital baseband signal processing consists of (a) data compression/decompression, (b) data segmentation/concatenation, (c) transmission format (transmission frame) generation/decomposition, and (d) channel coding/decoding. , (e) modulation (symbol mapping)/demodulation, and (f) generation of OFDM symbol data (baseband OFDM signal) by Inverse Fast Fourier Transform (IFFT).
- Control plane processing includes layer 1 (e.g. transmit power control), layer 2 (e.g. radio resource management and hybrid automatic repeat request (HARQ) processing), and layer 3 (e.g. signaling for attach, mobility and call management). communication management.
- layer 1 e.g. transmit power control
- layer 2 e.g. radio resource management and hybrid automatic repeat request (HARQ) processing
- layer 3 e.g. signaling for attach, mobility and call management.
- the digital baseband signal processing by the baseband processor 2503 may include signal processing of the SDAP layer, PDCP layer, RLC layer, MAC layer, and PHY layer.
- Control plane processing by the baseband processor 2503 may also include processing of Non-Access Stratum (NAS) protocols, RRC protocols, MAC CEs, and DCIs.
- NAS Non-Access Stratum
- the baseband processor 2503 may perform MIMO encoding and precoding for beamforming.
- the baseband processor 2503 may include a modem processor (e.g. DSP) that performs digital baseband signal processing and a protocol stack processor (e.g. CPU or MPU) that performs control plane processing.
- a modem processor e.g. DSP
- a protocol stack processor e.g. CPU or MPU
- the protocol stack processor that performs control plane processing may be shared with the application processor 2504, which will be described later.
- the application processor 2504 is also called CPU, MPU, microprocessor, or processor core.
- the application processor 2504 may include multiple processors (multiple processor cores).
- the application processor 2504 includes a system software program (Operating System (OS)) read from the memory 2506 or a memory (not shown) and various application programs (e.g., call application, WEB browser, mailer, camera operation application, music playback, etc.).
- OS Operating System
- application programs e.g., call application, WEB browser, mailer, camera operation application, music playback, etc.
- Various functions of UE3 are realized by executing the application).
- the baseband processor 2503 and application processor 2504 may be integrated on one chip, as indicated by the dashed line (2505) in FIG.
- baseband processor 2503 and application processor 2504 may be implemented as one System on Chip (SoC) device 2505 .
- SoC devices are sometimes called system Large Scale Integration (LSI) or chipsets.
- the memory 2506 is volatile memory, non-volatile memory, or a combination thereof.
- Memory 2506 may include multiple physically independent memory devices. Volatile memory is, for example, SRAM or DRAM or a combination thereof. Non-volatile memory is MROM, EEPROM, flash memory, or hard disk drive, or any combination thereof.
- memory 2506 may include external memory devices accessible from baseband processor 2503 , application processor 2504 , and SoC 2505 .
- Memory 2506 may include embedded memory devices integrated within baseband processor 2503 , within application processor 2504 , or within SoC 2505 . Additionally, memory 2506 may include memory within a Universal Integrated Circuit Card (UICC).
- UICC Universal Integrated Circuit Card
- the memory 2506 may store one or more software modules (computer programs) 2507 containing instructions and data for processing by the UE 3 as described in multiple embodiments above.
- the baseband processor 2503 or the application processor 2504 is configured to read and execute the software module 2507 from the memory 2506 to perform the processing of UE3 illustrated in the above embodiments. may be
- control plane processing and operations performed by UE 3 as described in the above embodiments are performed by other elements besides RF transceiver 2501 and antenna array 2502 : baseband processor 2503 and/or application processor 2504 and software module 2507 . can be realized by a memory 2506 that stores the
- each of the processors of RAN nodes 1, 2, 4, 6, and 7 and UE 3 executes the algorithm described with reference to the drawings.
- One or more programs can be executed that contain instructions to cause a computer to perform.
- a program includes instructions (or software code) that, when read into a computer, cause the computer to perform one or more of the functions described in the embodiments.
- the program may be stored in a non-transitory computer-readable medium or tangible storage medium.
- computer readable media or tangible storage media may include random-access memory (RAM), read-only memory (ROM), flash memory, solid-state drives (SSD) or other memory technology, CDs - ROM, digital versatile disk (DVD), Blu-ray disc or other optical disc storage, magnetic cassette, magnetic tape, magnetic disc storage or other magnetic storage device.
- the program may be transmitted on a transitory computer-readable medium or communication medium.
- transitory computer readable media or communication media include electrical, optical, acoustic, or other forms of propagated signals.
- a Radio Access Network (RAN) node configured to operate as a Master Node (MN) associated with a Master Cell Group (MCG) in dual connectivity for User Equipment (UE), at least one memory; at least one processor coupled to the at least one memory; with the at least one processor configured to send a control message to a candidate Secondary Node (SN);
- the control message indicates that one or more candidate PSCells are prepared by the candidate SN for first conditional mobility with the addition or modification of a Primary Secondary Cell Group (SCG) Cell (PSCell) for the UE. indicate that there is a need
- the control message indicates that the configuration of the one or more candidate PSCells supplied to the UE for the first conditional mobility is for subsequent conditional PSCell changes after the first conditional mobility.
- the at least one processor is configured to determine whether the one or more candidate PSCell configurations need to be maintained by the UE for the subsequent conditional PSCell change.
- the control message is an SN Addition Request message,
- the first conditional mobility is conditional Secondary Node (SN) change or inter-SN PSCell change,
- the at least one processor instructs, via the control message or other control message, the candidate PSCell that the first conditional mobility source PSCell is to be one of the candidate PSCells in the subsequent conditional PSCell change.
- the RAN node configured as shown in SN, The RAN node according to any one of Appendixes 1-3. (Appendix 5)
- the first conditional mobility is conditional Secondary Node (SN) change or inter-SN PSCell change
- the at least one processor is configured to indicate to a source SN providing the source PSCell that the first conditional mobility source PSCell is to be one of the candidate PSCells in the subsequent conditional PSCell change.
- the RAN node according to any one of appendices 1-4.
- the control message indicates that one or more candidate PSCells are prepared by the candidate SN for first conditional mobility with the addition or modification of a Primary Secondary Cell Group (SCG) Cell (PSCell) for the UE. indicate that there is a need
- the control message indicates that the configuration of the one or more candidate PSCells supplied to the UE for the first conditional mobility is for subsequent conditional PSCell changes after the first conditional mobility.
- a program that causes a computer to perform a method for a Radio Access Network (RAN) node configured to operate as a Master Node (MN) associated with a Master Cell Group (MCG) in dual connectivity for User Equipment (UE). and The method comprises sending a control message to a candidate Secondary Node (SN); The control message indicates that one or more candidate PSCells are prepared by the candidate SN for first conditional mobility with the addition or modification of a Primary Secondary Cell Group (SCG) Cell (PSCell) for the UE.
- RAN Radio Access Network
- MN Master Node
- MCG Master Cell Group
- UE User Equipment
- the control message indicates that the configuration of the one or more candidate PSCells supplied to the UE for the first conditional mobility is for subsequent conditional PSCell changes after the first conditional mobility. indicating that a mode of operation reused by the UE is recommended to program.
- a Radio Access Network (RAN) node configured to operate as a Source Secondary Node (SN) associated with a Secondary Cell Group (SCG) in dual connectivity for User Equipment (UE), at least one memory; at least one processor coupled to the at least one memory; with The at least one processor is configured to send a control message to the dual connectivity Master Node (MN); the control message indicates one or more candidate PSCells recommended by the source SN for a first conditional Primary Secondary Cell Group (SCG) Cell (PSCell) change for the UE; The control message indicates that the configuration of the one or more candidate PSCells supplied to the UE for the first conditional PSCell change is determined by a subsequent conditional PSCell change after the first conditional PCell change.
- MN dual connectivity Master Node
- SCG Primary Secondary Cell Group
- PSCell Packet Control Cell
- the at least one processor is configured to determine whether the one or more candidate PSCell configurations need to be maintained by the UE for the subsequent conditional PSCell change.
- the RAN node according to Supplementary Note 8. (Appendix 10) wherein the control message is an SN Change Required message; The RAN node according to Supplementary Note 8 or 9.
- RAN Radio Access Network
- MN Multimediality
- a Radio Access Network (RAN) node configured to operate as a Candidate Secondary Node (SN) associated with a Secondary Cell Group (SCG) in dual connectivity for User Equipment (UE), at least one memory; at least one processor coupled to the at least one memory; with The at least one processor is configured to receive a first control message from the dual connectivity Master Node (MN) and to send a second control message to the MN in response to the first control message.
- the first control message requires one or more candidate PSCells to be prepared for first conditional mobility with addition or modification of a Primary Secondary Cell Group (SCG) Cell (PSCell) for the UE.
- SCG Primary Secondary Cell Group
- PSCell Primary Secondary Cell Group
- the second control message indicates that there is the second control message indicates at least one candidate PSCell prepared by the candidate SN among the one or more candidate PSCells;
- the second control message indicates that the configuration of the at least one candidate PSCell provided to the UE for the first conditional mobility is determined for a subsequent conditional PSCell change after the first conditional mobility. indicating that a mode of operation reused by the UE is recommended for RAN node.
- the at least one processor is configured to determine whether the at least one candidate PSCell configuration needs to be maintained by the UE for the subsequent conditional PSCell change.
- the RAN node according to Supplementary Note 12.
- the RAN node according to Supplementary Note 12 or 13.
- (Appendix 15) A method performed by a Radio Access Network (RAN) node configured to operate as a Candidate Secondary Node (SN) associated with a Secondary Cell Group (SCG) in dual connectivity for User Equipment (UE), comprising: receiving a first control message from the dual connectivity Master Node (MN); and sending a second control message to the MN in response to the first control message; with The first control message requires one or more candidate PSCells to be prepared for first conditional mobility with addition or modification of a Primary Secondary Cell Group (SCG) Cell (PSCell) for the UE.
- SCG Primary Secondary Cell Group
- PSCell Primary Secondary Cell Group
- the second control message indicates that there is the second control message indicates at least one candidate PSCell prepared by the candidate SN among the one or more candidate PSCells;
- the second control message indicates that the configuration of the at least one candidate PSCell provided to the UE for the first conditional mobility is determined for a subsequent conditional PSCell change after the first conditional mobility. indicating that a mode of operation reused by the UE is recommended for Method.
- a Radio Access Network (RAN) node configured to operate as a Candidate Secondary Node (SN) associated with a Secondary Cell Group (SCG) in dual connectivity for User Equipment (UE), at least one memory; at least one processor coupled to the at least one memory; with The at least one processor preparing one or more candidate PSCells in a first conditional mobility with addition or modification of a Primary Secondary Cell Group (SCG) Cell (PSCell) for the UE; if one of the one or more candidate PSCells is selected by the UE, send an SN Radio Resource Control (RRC) message to the UE; is configured as In the SN RRC message, configuration of one or more candidate PSCells other than the selected candidate PSCell prepared for the first conditional mobility is performed after the first conditional mobility.
- RRC Radio Resource Control
- the at least one processor is configured to determine whether the other one or more candidate PSCell configurations need to be maintained by the UE for the subsequent conditional PSCell change. 17.
- the RAN node according to Supplementary Note 16.
- RRC Radio Resource Control
- a radio access network (RAN) node configured to act as a source node for a User Equipment (UE) conditional handover, comprising: at least one memory; at least one processor coupled to the at least one memory; with the at least one processor configured to send a control message to a candidate target node; the control message indicates that one or more candidate target cells need to be prepared by the candidate target node for a first conditional handover of the UE; The control message indicates that the configuration of the one or more candidate target cells supplied to the UE for the first conditional handover is a subsequent second conditional handover after the first conditional handover.
- RAN radio access network
- UE User Equipment
- the at least one processor is configured to determine whether the one or more candidate target cell settings should be maintained by the UE for the second conditional handover. 19.
- the RAN node according to Supplementary Note 19.
- Appendix 21 A method performed by a Radio Access Network (RAN) node configured to act as a User Equipment (UE) conditional handover source node, comprising: transmitting a control message to a candidate target node; the control message indicates that one or more candidate target cells need to be prepared by the candidate target node for a first conditional handover of the UE; The control message indicates that the configuration of the one or more candidate target cells supplied to the UE for the first conditional handover is a subsequent second conditional handover after the first conditional handover. indicating that a mode of operation reused by the UE for handover is recommended; Method.
- RAN Radio Access Network
- UE User Equipment
- a radio access network (RAN) node configured to operate as a candidate target node for a User Equipment (UE) conditional handover, comprising: at least one memory; at least one processor coupled to the at least one memory; with the at least one processor configured to receive a first control message from a source node and to transmit a second control message to the source node in response to the first control message; the first control message indicates that one or more candidate target cells need to be prepared for a first conditional handover of the UE; said second control message indicating at least one candidate target cell prepared by said source node among said one or more candidate target cells; The second control message indicates that the configuration of the at least one candidate target cell supplied to the UE for the first conditional handover is a subsequent second condition after the first conditional handover.
- RAN radio access network
- UE User Equipment
- the at least one processor is configured to determine whether the one or more candidate target cell settings should be maintained by the UE for the second conditional handover. 23.
- the RAN node according to Supplementary Note 22.
- a method performed by a radio access network (RAN) node configured to operate as a candidate target node for a User Equipment (UE) conditional handover comprising: receiving a first control message from a source node; and sending a second control message to the source node in response to the first control message; with the first control message indicates that one or more candidate target cells need to be prepared for a first conditional handover of the UE; said second control message indicating at least one candidate target cell prepared by said source node among said one or more candidate target cells; The second control message indicates that the configuration of the at least one candidate target cell supplied to the UE for the first conditional handover is a subsequent second condition after the first conditional handover.
- RAN radio access network
- UE User Equipment
- a radio access network (RAN) node configured to operate as a candidate target node for a User Equipment (UE) conditional handover, comprising: at least one memory; at least one processor coupled to the at least one memory; with The at least one processor preparing one or more candidate target cells for a first conditional handover of the UE; If one of the one or more candidate target cells is selected by the UE, send a Radio Resource Control (RRC) message to the UE; is configured as The RRC message indicates that setting of one or more candidate target cells other than the selected candidate target cell prepared for the first conditional handover is performed for the first conditional handover.
- RRC Radio Resource Control
- the at least one processor is configured to determine whether the other one or more candidate target cell settings need to be maintained by the UE for the second conditional handover. , 26.
- the RAN node according to Supplementary Note 25.
- Appendix 27 A method performed by a radio access network (RAN) node configured to operate as a candidate target node for a User Equipment (UE) conditional handover, comprising: Preparing one or more candidate target cells in a first conditional handover of the UE; and Radio Resource Control (RRC) if one of the one or more candidate target cells is selected by the UE.
- RAN radio access network
- UE User Equipment
- UE User Equipment
- the RRC message indicates that the configuration of one or more candidate target cells other than the selected candidate target cell prepared for the first conditional handover is after the first conditional handover. indicating that a mode of operation reused by the UE for a subsequent second conditional handover is recommended;
- Method. User Equipment (UE), at least one memory; at least one processor coupled to the at least one memory; with The at least one processor Master configuration of multiple candidate PSCells provided by multiple candidate Secondary Nodes (SNs) for first conditional mobility with addition or modification of Primary Secondary Cell Group (SCG) Cells (PSCells) for the UE.
- SCG Primary Secondary Cell Group
- SCG Primary Secondary Cell Group
- UE User Equipment
- the at least one processor receiving from a Master Node (MN) a plurality of candidate PSCell configurations for a first conditional mobility with addition or modification of a Primary Secondary Cell Group (SCG) Cell (PSCell) for the UE; If the execution condition for one of the plurality of candidate PSCells is satisfied, applying the configuration corresponding to the one candidate PSCell; Among the plurality of candidate PSCells other than the one candidate PSCell, the configuration of one or more candidate PSCells specified by the MN or one or more candidate Secondary Nodes (SN) is performed according to the first conditional Selectively maintain for subsequent conditional PSCell changes after mobility, configured as U.E.
- MN Master Node
- SCG Primary Secondary Cell Group
- PSCell Primary Secondary Cell Group
- SN Primary Secondary Nodes
- a method performed by User Equipment comprising: at least one memory; receiving from a Master Node (MN) a configuration of multiple candidate PSCells for a first conditional mobility with addition or modification of a Primary Secondary Cell Group (SCG) Cell (PSCell) for the UE; If the execution condition for one of the plurality of candidate PSCells is satisfied, applying the configuration corresponding to the one candidate PSCell, and Among the plurality of candidate PSCells other than the one candidate PSCell, the MN or Selectively maintaining one or more candidate PSCell configurations designated by one or more candidate Secondary Nodes (SNs) for subsequent conditional PSCell changes after said first conditional mobility. matter, How to prepare.
- MN Master Node
- SCG Primary Secondary Cell Group
- PSCell Primary Secondary Cell Group
- a Radio Access Network (RAN) node configured to operate as a Candidate Secondary Node (SN) associated with a Secondary Cell Group (SCG) in dual connectivity for User Equipment (UE), at least one memory; at least one processor coupled to the at least one memory; with The at least one processor Master Node (MN) one or more candidate PSCells prepared by said candidate SN for first conditional mobility with addition or change of Primary Secondary Cell Group (SCG) Cell (PSCell) for said UE. shown in indicating to the MN at least one of the one or more candidate PSCells whose configuration needs to be maintained for subsequent conditional PSCell changes after the first conditional mobility; configured as RAN node.
- MN Master Node
- SCG Primary Secondary Cell Group
- PSCell Primary Secondary Cell Group
- RAN Radio Access Network
- SN Candidate Secondary Node
- SCG Secondary Cell Group
- PSCell Primary Secondary Cell Group
- a Radio Access Network (RAN) node configured to operate as a Master Node (MN) associated with a Master Cell Group (MCG) in dual connectivity for User Equipment (UE), at least one memory; at least one processor coupled to the at least one memory; with The at least one processor receives a control message from a first candidate Secondary Node (SN) for a first conditional mobility involving addition or modification of a Primary Secondary Cell Group (SCG) Cell (PSCell) for the UE.
- MN Master Node
- MCG Master Cell Group
- UE User Equipment
- the control message is configured as the control message indicates one or more candidate PSCells prepared by the first candidate SN for the first conditional mobility;
- the control message specifies at least one candidate PSCell whose configuration needs to be maintained for a subsequent conditional PSCell change after the first conditional mobility among the one or more candidate PSCells.
- the at least one processor configured to inform the UE of the at least one candidate PSCell; 34.
- the at least one processor is configured to inform a second candidate SN of the first conditional mobility different from the first candidate SN of the at least one candidate PSCell. 36.
- RAN radio access network
- MN Master Node
- MCG Master Cell Group
- UE User Equipment
- UE User Equipment
- the at least one processor receiving from a source node configurations of a plurality of candidate target cells provided by a plurality of candidate target nodes for a first conditional handover of the UE; if an execution condition for one of the plurality of candidate target cells is met, applying settings corresponding to the one candidate target cell; setting only one or more other candidate target cells provided by selected candidate target nodes serving said one candidate target cell in a second conditional handover subsequent to said first conditional handover; selectively maintain for configured as U.E.
- UE User Equipment
- UE User Equipment
- the at least one processor receiving from a source node a plurality of candidate target cell configurations for a first conditional handover of the UE; if an execution condition for one of the plurality of candidate target cells is met, applying settings corresponding to the one candidate target cell; setting of one or more candidate target cells designated by the source node or one or more candidate target nodes, among the plurality of candidate target cells excluding the one candidate target cell, according to the first condition; selectively maintaining for a second conditional handover subsequent to the handover with configured as U.E.
- UE User Equipment
- a radio access network (RAN) node configured to operate as a candidate target node for a User Equipment (UE) conditional handover, comprising: at least one memory; at least one processor coupled to the at least one memory; with The at least one processor indicating to a source node one or more candidate target cells prepared by the candidate target node for a first conditional handover of the UE; said source node identifying at least one of said one or more candidate target cells whose configuration needs to be maintained for a second conditional handover subsequent to said first conditional handover; shown in configured as RAN node.
- RAN node configured to operate as a candidate target node for a User Equipment (UE) conditional handover, comprising: at least one memory; at least one processor coupled to the at least one memory; with The at least one processor indicating to a source node one or more candidate target cells prepared by the candidate target node for a first conditional handover of the UE; said source node identifying at least one of said one or more candidate target cells whose configuration needs to be
- a method performed by a radio access network (RAN) node configured to operate as a candidate target node for a User Equipment (UE) conditional handover comprising: indicating to a source node one or more candidate target cells prepared by the candidate target node for a first conditional handover of the UE; indicating to the source node at least one candidate target cell whose configuration needs to be maintained for a second conditional handover subsequent to one conditional handover; How to prepare.
- RAN radio access network
- UE User Equipment
- a radio access network (RAN) node configured to act as a source node for a User Equipment (UE) conditional handover, comprising: at least one memory; at least one processor coupled to the at least one memory; with the at least one processor configured to receive a control message from a first candidate target node for a first conditional handover of the UE; said control message indicating one or more candidate target cells prepared by said first candidate target node for said first conditional handover; The control message specifies at least one of the one or more candidate target cells whose configuration needs to be maintained for a subsequent second conditional handover after the first conditional handover. indicating candidate target cells, RAN node.
- UE User Equipment
- RAN Radio Access Network
- UE User Equipment
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Abstract
Description
(a)前記UEためのPSCellの追加又は変更を伴う第1の条件付きモビリティのための複数の候補SNにより提供される複数の候補PSCellの設定をMNから受信すること;
(b)前記複数の候補PSCellのうち1つの実行条件が満たされたなら、前記1つの候補PSCellに対応する設定を適用すること;及び
(c)前記1つの候補PSCellを提供する選択された候補SNによって提供される他の1又はそれ以上の候補PSCellの設定のみを、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために選択的に維持すること。
(a)前記UEためのPSCellの追加又は変更を伴う第1の条件付きモビリティのための複数の候補SNにより提供される複数の候補PSCellの設定をMNから受信すること;
(b)前記複数の候補PSCellのうち1つの実行条件が満たされたなら、前記1つの候補PSCellに対応する設定を適用すること;及び
(c)前記1つの候補PSCell以外の前記複数の候補PSCellのうち、前記MN又は1若しくはそれ以上の候補SNにより指定された1又はそれ以上の候補PSCellの設定を、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために選択的に維持すること。
(a)前記UEためのPSCellの追加又は変更を伴う第1の条件付きモビリティのために前記候補SNにより準備された1又はそれ以上の候補PSCellをMN)に示すこと;及び
(b)前記1又はそれ以上の候補PSCellのうち、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のためにその設定が維持される必要がある少なくとも1つの候補PSCellを前記MNに示すこと。
(a)前記UEの第1の条件付きハンドオーバのための複数の候補ターゲットノードにより提供される複数の候補ターゲットセルの設定をソースノードから受信すること;
(b)前記複数の候補ターゲットセルのうち1つの実行条件が満たされたなら、前記1つの候補ターゲットセルに対応する設定を適用すること;及び
(c)前記1つの候補ターゲットセルを提供する選択された候補ターゲットノードによって提供される他の1又はそれ以上の候補ターゲットセルの設定のみを、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのために選択的に維持すること。
(a)前記UEの第1の条件付きハンドオーバのための複数の候補ターゲットノードにより提供される複数の候補ターゲットセルの設定をソースノードから受信すること;
(b)前記複数の候補ターゲットセルのうち1つの実行条件が満たされたなら、前記1つの候補ターゲットセルに対応する設定を適用すること;及び
(c)前記1つの候補ターゲットセルを除く前記複数の候補ターゲットセルのうち、前記ソースノード又は1又はそれ以上の候補ターゲットノードにより指定された1又はそれ以上の候補ターゲットセルの設定を、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのために選択的に維持すること。
(a)前記UEの第1の条件付きハンドオーバのために前記ターゲットノードにより準備された1又はそれ以上の候補ターゲットセルをソースノードに示すこと;及び
(b)前記1又はそれ以上の候補ターゲットセルのうち、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのためにその設定が維持される必要がある少なくとも1つの候補ターゲットセルを前記ソースノードに示すこと。
本実施形態は、selective CG activationのためのCPA及びinter-SN CPCの改良を提供する。具体的には、本実施形態は、selective CG/cell activationに関する様々な手順の明確化に関する。本実施形態に係る無線通信システムの構成例は、図1又は図2に示された例と同様であってもよい。
本実施形態は、selective CG activationのためのCPA及びinter-SN CPCの改良を提供する。本実施形態は、CPA又はInter-SN CPC(又は条件付きSN変更)のための複数の候補PSCellの設定を後続のCPCのために再利用することに関する。本実施形態に係る無線通信システムの構成例は、図1又は図2に示された例と同様であってもよい。
本実施形態は、selective CG activationのためのCHOの改良を提供する。具体的には、本実施形態は、selective CG/cell activationに関する様々な手順の明確化に関する。本実施形態に係る無線通信システムの構成例は、図3に示された例と同様であってもよい。
本実施形態は、selective cell activationのためのCHOの改良を提供する。本実施形態は、CHOのための複数の候補ターゲットセルの設定を後続のCHOのために再利用することに関する。本実施形態に係る無線通信システムの構成例は、図3に示された例と同様であってもよい。
User Equipment(UE)のためのデュアルコネクティビティにおいてMaster Cell Group(MCG)に関連付けられたMaster Node(MN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、制御メッセージを候補Secondary Node(SN)に送信するよう構成され、
前記制御メッセージは、前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために1又はそれ以上の候補PSCellが前記候補SNによって準備される必要があることを示し、
前記制御メッセージは、前記第1の条件付きモビリティのために前記UEに供給される前記1又はそれ以上の候補PSCellの設定が前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。
(付記2)
前記少なくとも1つのプロセッサは、前記後続の条件付きPSCell変更のために前記1又はそれ以上の候補PSCellの設定が前記UEにより維持される必要があるか否かを決定するよう構成される、
付記1に記載のRANノード。
(付記3)
前記制御メッセージは、SN Addition Requestメッセージである、
付記1又は2に記載のRANノード。
(付記4)
前記第1の条件付きモビリティは、条件付きSecondary Node(SN)変更又はSN間PSCell変更であり、
前記少なくとも1つのプロセッサは、前記第1の条件付きモビリティのソースPSCellが前記後続の条件付きPSCell変更における候補PSCellの1つとされることを、前記制御メッセージ又は他の制御メッセージを介して、前記候補SNに示すよう構成される、
付記1~3のいずれか1項に記載のRANノード。
(付記5)
前記第1の条件付きモビリティは、条件付きSecondary Node(SN)変更又はSN間PSCell変更であり、
前記少なくとも1つのプロセッサは、前記第1の条件付きモビリティのソースPSCellが前記後続の条件付きPSCell変更における候補PSCellの1つとされることを、前記ソースPSCellを提供するソースSNに示すよう構成される、
付記1~4のいずれか1項に記載のRANノード。
(付記6)
User Equipment(UE)のためのデュアルコネクティビティにおいてMaster Cell Group(MCG)に関連付けられたMaster Node(MN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
制御メッセージを候補Secondary Node(SN)に送信することを備え、
前記制御メッセージは、前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために1又はそれ以上の候補PSCellが前記候補SNによって準備される必要があることを示し、
前記制御メッセージは、前記第1の条件付きモビリティのために前記UEに供給される前記1又はそれ以上の候補PSCellの設定が前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
方法。
(付記7)
User Equipment(UE)のためのデュアルコネクティビティにおいてMaster Cell Group(MCG)に関連付けられたMaster Node(MN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードのための方法をコンピュータに行わせるプログラムであって、
前記方法は、制御メッセージを候補Secondary Node(SN)に送信することを備え、
前記制御メッセージは、前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために1又はそれ以上の候補PSCellが前記候補SNによって準備される必要があることを示し、
前記制御メッセージは、前記第1の条件付きモビリティのために前記UEに供給される前記1又はそれ以上の候補PSCellの設定が前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
プログラム。
(付記8)
User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられたソースSecondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、制御メッセージを前記デュアルコネクティビティのMaster Node(MN)に送信するよう構成され、
前記制御メッセージは、前記UEための第1の条件付きPrimary Secondary Cell Group(SCG)Cell(PSCell)変更のために前記ソースSNが推薦する1又はそれ以上の候補PSCellを示し、
前記制御メッセージは、前記第1の条件付きPSCell変更のために前記UEに供給される前記1又はそれ以上の候補PSCellの設定が前記第1の条件付きPCell変更の後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。
(付記9)
前記少なくとも1つのプロセッサは、前記後続の条件付きPSCell変更のために前記1又はそれ以上の候補PSCellの設定が前記UEにより維持される必要があるか否かを決定するよう構成される、
付記8に記載のRANノード。
(付記10)
前記制御メッセージは、SN Change Requiredメッセージである、
付記8又は9に記載のRANノード。
(付記11)
User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられたソースSecondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
制御メッセージを前記デュアルコネクティビティのMaster Node(MN)に送信することを備え、
前記制御メッセージは、前記UEための第1の条件付きPrimary Secondary Cell Group(SCG)Cell(PSCell)変更のために前記ソースSNが推薦する1又はそれ以上の候補PSCellを示し、
前記制御メッセージは、前記第1の条件付きPSCell変更のために前記UEに供給される前記1又はそれ以上の候補PSCellの設定が前記第1の条件付きPCell変更の後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
方法。
(付記12)
User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられた候補Secondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、第1の制御メッセージを前記デュアルコネクティビティのMaster Node(MN)から受信し、前記第1の制御メッセージに応答して第2の制御メッセージを前記MNに送信するよう構成され、
前記第1の制御メッセージは、前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために1又はそれ以上の候補PSCellが準備される必要があることを示し、
前記第2の制御メッセージは、前記1又はそれ以上の候補PSCellのうち前記候補SNにより準備された少なくとも1つの候補PSCellを示し、
前記第2の制御メッセージは、前記第1の条件付きモビリティのために前記UEに供給される前記少なくとも1つの候補PSCellの設定が前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。
(付記13)
前記少なくとも1つのプロセッサは、前記後続の条件付きPSCell変更のために前記少なくとも1つの候補PSCellの設定が前記UEにより維持される必要があるか否かを決定するよう構成される、
付記12に記載のRANノード。
(付記14)
前記第1の制御メッセージは、SN Addition Requestメッセージであり、前記第2の制御メッセージはSN Addition Request Acknowledgeメッセージである、
付記12又は13に記載のRANノード。
(付記15)
User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられた候補Secondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
第1の制御メッセージを前記デュアルコネクティビティのMaster Node(MN)から受信すること、及び
前記第1の制御メッセージに応答して第2の制御メッセージを前記MNに送信すること、
を備え、
前記第1の制御メッセージは、前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために1又はそれ以上の候補PSCellが準備される必要があることを示し、
前記第2の制御メッセージは、前記1又はそれ以上の候補PSCellのうち前記候補SNにより準備された少なくとも1つの候補PSCellを示し、
前記第2の制御メッセージは、前記第1の条件付きモビリティのために前記UEに供給される前記少なくとも1つの候補PSCellの設定が前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
方法。
(付記16)
User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられた候補Secondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティにおける1又はそれ以上の候補PSCellを準備し、
前記1又はそれ以上の候補PSCellのうち1つが前記UEにより選択されたなら、SN Radio Resource Control(RRC)メッセージを前記UEに送信する、
よう構成され、
前記SN RRCメッセージは、前記第1の条件付きモビリティのために準備されていた前記選択された候補PSCell以外の他の1又はそれ以上の候補PSCellの設定が、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。
(付記17)
前記少なくとも1つのプロセッサは、前記他の1又はそれ以上の候補PSCellの設定が前記後続の条件付きPSCell変更のために前記UEにより維持される必要があるか否かを決定するよう構成される、
付記16に記載のRANノード。
(付記18)
User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられた候補Secondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティにおける1又はそれ以上の候補PSCellを準備すること、及び
前記1又はそれ以上の候補PSCellのうち1つが前記UEにより選択されたなら、SN Radio Resource Control(RRC)メッセージを前記UEに送信すること、
を備え、
前記SN RRCメッセージは、前記第1の条件付きモビリティのために準備されていた前記選択された候補PSCell以外の1又はそれ以上の候補PSCellの設定が、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
方法。
(付記19)
User Equipment(UE)の条件付きハンドオーバのソースノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、制御メッセージを候補ターゲットノードに送信するよう構成され、
前記制御メッセージは、前記UEの第1の条件付きハンドオーバのために1又はそれ以上の候補ターゲットセルが前記候補ターゲットノードによって準備される必要があることを示し、
前記制御メッセージは、前記第1の条件付きハンドオーバのために前記UEに供給される前記1又はそれ以上の候補ターゲットセルの設定が前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。
(付記20)
前記少なくとも1つのプロセッサは、前記第2の条件付きハンドオーバのために前記1又はそれ以上の候補ターゲットセルの設定が前記UEにより維持される必要があるか否かを決定するよう構成される、
付記19に記載のRANノード。
(付記21)
User Equipment(UE)の条件付きハンドオーバのソースノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
制御メッセージを候補ターゲットノードに送信することを備え、
前記制御メッセージは、前記UEの第1の条件付きハンドオーバのために1又はそれ以上の候補ターゲットセルが前記候補ターゲットノードによって準備される必要があることを示し、
前記制御メッセージは、前記第1の条件付きハンドオーバのために前記UEに供給される前記1又はそれ以上の候補ターゲットセルの設定が前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのために前記UEにより再利用される動作モードが推奨されることを示す、
方法。
(付記22)
User Equipment(UE)の条件付きハンドオーバの候補ターゲットノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、第1の制御メッセージをソースノードから受信し、前記第1の制御メッセージに応答して第2の制御メッセージを前記ソースノードに送信するよう構成され、
前記第1の制御メッセージは、前記UEの第1の条件付きハンドオーバのために1又はそれ以上の候補ターゲットセルが準備される必要があることを示し、
前記第2の制御メッセージは、前記1又はそれ以上の候補ターゲットセルのうち前記ソースノードにより準備された少なくとも1つの候補ターゲットセルを示し、
前記第2の制御メッセージは、前記第1の条件付きハンドオーバのために前記UEに供給される前記少なくとも1つの候補ターゲットセルの設定が前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。
(付記23)
前記少なくとも1つのプロセッサは、前記第2の条件付きハンドオーバのために前記1又はそれ以上の候補ターゲットセルの設定が前記UEにより維持される必要があるか否かを決定するよう構成される、
付記22に記載のRANノード。
(付記24)
User Equipment(UE)の条件付きハンドオーバの候補ターゲットノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
第1の制御メッセージをソースノードから受信すること、及び
前記第1の制御メッセージに応答して第2の制御メッセージを前記ソースノードに送信すること、
を備え、
前記第1の制御メッセージは、前記UEの第1の条件付きハンドオーバのために1又はそれ以上の候補ターゲットセルが準備される必要があることを示し、
前記第2の制御メッセージは、前記1又はそれ以上の候補ターゲットセルのうち前記ソースノードにより準備された少なくとも1つの候補ターゲットセルを示し、
前記第2の制御メッセージは、前記第1の条件付きハンドオーバのために前記UEに供給される前記少なくとも1つの候補ターゲットセルの設定が前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのために前記UEにより再利用される動作モードが推奨されることを示す、
方法。
(付記25)
User Equipment(UE)の条件付きハンドオーバの候補ターゲットノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEの第1の条件付きハンドオーバにおける1又はそれ以上の候補ターゲットセルを準備し、
前記1又はそれ以上の候補ターゲットセルのうち1つが前記UEにより選択されたなら、Radio Resource Control(RRC)メッセージを前記UEに送信する、
よう構成され、
前記RRCメッセージは、前記第1の条件付きハンドオーバのために準備されていた前記選択された候補ターゲットセル以外の他の1又はそれ以上の候補ターゲットセルの設定が、前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。
(付記26)
前記少なくとも1つのプロセッサは、前記他の1又はそれ以上の候補ターゲットセルの設定が前記第2の条件付きハンドオーバのために前記UEにより維持される必要があるか否かを決定するよう構成される、
付記25に記載のRANノード。
(付記27)
User Equipment(UE)の条件付きハンドオーバの候補ターゲットノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
前記UEの第1の条件付きハンドオーバにおける1又はそれ以上の候補ターゲットセルを準備すること、及び
前記1又はそれ以上の候補ターゲットセルのうち1つが前記UEにより選択されたなら、Radio Resource Control(RRC)メッセージを前記UEに送信すること、
を備え、
前記RRCメッセージは、前記第1の条件付きハンドオーバのために準備されていた前記選択された候補ターゲットセル以外の1又はそれ以上の候補ターゲットセルの設定が、前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのために前記UEにより再利用される動作モードが推奨されることを示す、
方法。
(付記28)
User Equipment(UE)であって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのための複数の候補Secondary Node(SN)により提供される複数の候補PSCellの設定をMaster Node(MN)から受信し、
前記複数の候補PSCellのうち1つの実行条件が満たされたなら、前記1つの候補PSCellに対応する設定を適用し、
前記1つの候補PSCellを提供する選択された候補SNによって提供される他の1又はそれ以上の候補PSCellの設定のみを、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために選択的に維持する、
よう構成される、
UE。
(付記29)
User Equipment(UE)により行われる方法であって、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのための複数の候補Secondary Node(SN)により提供される複数の候補PSCellの設定をMaster Node(MN)から受信すること、
前記複数の候補PSCellのうち1つの実行条件が満たされたなら、前記1つの候補PSCellに対応する設定を適用すること、及び
前記1つの候補PSCellを提供する選択された候補SNによって提供される他の1又はそれ以上の候補PSCellの設定のみを、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために選択的に維持すること、
を備える方法。
(付記30)
User Equipment(UE)であって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのための複数の候補PSCellの設定をMaster Node(MN)から受信し、
前記複数の候補PSCellのうち1つの実行条件が満たされたなら、前記1つの候補PSCellに対応する設定を適用し、
前記1つの候補PSCell以外の前記複数の候補PSCellのうち、前記MN又は1若しくはそれ以上の候補Secondary Node(SN)により指定された1又はそれ以上の候補PSCellの設定を、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために選択的に維持する、
よう構成される、
UE。
(付記31)
User Equipment(UE)により行われる方法であって、
少なくとも1つのメモリと、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのための複数の候補PSCellの設定をMaster Node(MN)から受信すること、
前記複数の候補PSCellのうち1つの実行条件が満たされたなら、前記1つの候補PSCellに対応する設定を適用すること、及び
前記1つの候補PSCell以外の前記複数の候補PSCellのうち、前記MN又は1若しくはそれ以上の候補Secondary Node(SN)により指定された1又はそれ以上の候補PSCellの設定を、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために選択的に維持すること、
を備える方法。
(付記32)
User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられた候補Secondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために前記候補SNにより準備された1又はそれ以上の候補PSCellをMaster Node(MN)に示し、
前記1又はそれ以上の候補PSCellのうち、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のためにその設定が維持される必要がある少なくとも1つの候補PSCellを前記MNに示す、
よう構成される、
RANノード。
(付記33)
User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられた候補Secondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために前記候補SNにより準備された1又はそれ以上の候補PSCellをMaster Node(MN)に示すこと、及び
前記1又はそれ以上の候補PSCellのうち、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のためにその設定が維持される必要がある少なくとも1つの候補PSCellを前記MNに示すこと、
を備える方法。
(付記34)
User Equipment(UE)のためのデュアルコネクティビティにおいてMaster Cell Group(MCG)に関連付けられたMaster Node(MN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティの第1の候補Secondary Node(SN)から制御メッセージを受信するよう構成され、
前記制御メッセージは、前記第1の条件付きモビリティのために前記第1の候補SNにより準備された1又はそれ以上の候補PSCellを示し、
前記制御メッセージは、前記1又はそれ以上の候補PSCellのうち、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のためにその設定が維持される必要がある少なくとも1つの候補PSCellを示す、
RANノード。
(付記35)
前記少なくとも1つのプロセッサは、前記なくとも1つの候補PSCellを前記UEに知らせせるよう構成される、
付記34に記載のRANノード。
(付記36)
前記少なくとも1つのプロセッサは、前記第1の候補SNとは異なる前記第1の条件付きモビリティの第2の候補SNに、前記少なくとも1つの候補PSCellを知らせるよう構成される、
付記34又は35に記載のRANノード。
(付記37)
User Equipment(UE)のためのデュアルコネクティビティにおいてMaster Cell Group(MCG)に関連付けられたMaster Node(MN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティの第1の候補Secondary Node(SN)から制御メッセージを受信することを備え、
前記制御メッセージは、前記第1の条件付きモビリティのために前記第1の候補SNにより準備された1又はそれ以上の候補PSCellを示し、
前記制御メッセージは、前記1又はそれ以上の候補PSCellのうち、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のためにその設定が維持される必要がある少なくとも1つの候補PSCellを示す、
方法。
(付記38)
User Equipment(UE)であって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEの第1の条件付きハンドオーバのための複数の候補ターゲットノードにより提供される複数の候補ターゲットセルの設定をソースノードから受信し、
前記複数の候補ターゲットセルのうち1つの実行条件が満たされたなら、前記1つの候補ターゲットセルに対応する設定を適用し、
前記1つの候補ターゲットセルを提供する選択された候補ターゲットノードによって提供される他の1又はそれ以上の候補ターゲットセルの設定のみを、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのために選択的に維持する、
よう構成される、
UE。
(付記39)
User Equipment(UE)により行われる方法であって、
前記UEの第1の条件付きハンドオーバのための複数の候補ターゲットノードにより提供される複数の候補ターゲットセルの設定をソースノードから受信すること、
前記複数の候補ターゲットセルのうち1つの実行条件が満たされたなら、前記1つの候補ターゲットセルに対応する設定を適用すること、及び
前記1つの候補ターゲットセルを提供する選択された候補ターゲットノードによって提供される他の1又はそれ以上の候補ターゲットセルの設定のみを、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのために選択的に維持すること、
を備える方法。
(付記40)
User Equipment(UE)であって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEの第1の条件付きハンドオーバのための複数の候補ターゲットセルの設定をソースノードから受信し、
前記複数の候補ターゲットセルのうち1つの実行条件が満たされたなら、前記1つの候補ターゲットセルに対応する設定を適用し、
前記1つの候補ターゲットセルを除く前記複数の候補ターゲットセルのうち、前記ソースノード又は1又はそれ以上の候補ターゲットノードにより指定された1又はそれ以上の候補ターゲットセルの設定を、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのために選択的に維持する、
よう構成される、
UE。
(付記41)
User Equipment(UE)により行われる方法であって、
前記UEの第1の条件付きハンドオーバのための複数の候補ターゲットセルの設定をソースノードから受信すること、
前記複数の候補ターゲットセルのうち1つの実行条件が満たされたなら、前記1つの候補ターゲットセルに対応する設定を適用すること、及び
前記1つの候補ターゲットセルを除く前記複数の候補ターゲットセルのうち、前記ソースノード又は1又はそれ以上の候補ターゲットノードにより指定された1又はそれ以上の候補ターゲットセルの設定を、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのために選択的に維持すること、
を備える方法。
(付記42)
User Equipment(UE)の条件付きハンドオーバの候補ターゲットノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEの第1の条件付きハンドオーバのために前記候補ターゲットノードにより準備された1又はそれ以上の候補ターゲットセルをソースノードに示し、
前記1又はそれ以上の候補ターゲットセルのうち、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのためにその設定が維持される必要がある少なくとも1つの候補ターゲットセルを前記ソースノードに示す、
よう構成される、
RANノード。
(付記43)
User Equipment(UE)の条件付きハンドオーバの候補ターゲットノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
前記UEの第1の条件付きハンドオーバのために前記候補ターゲットノードにより準備された1又はそれ以上の候補ターゲットセルをソースノードに示すこと、及び
前記1又はそれ以上の候補ターゲットセルのうち、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのためにその設定が維持される必要がある少なくとも1つの候補ターゲットセルを前記ソースノードに示すこと、
を備える方法。
(付記44)
User Equipment(UE)の条件付きハンドオーバのソースノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、前記UEの第1の条件付きハンドオーバの第1の候補ターゲットノードから制御メッセージを受信するよう構成され、
前記制御メッセージは、前記第1の条件付きハンドオーバのために前記第1の候補ターゲットノードにより準備された1又はそれ以上の候補ターゲットセルを示し、
前記制御メッセージは、前記1又はそれ以上の候補ターゲットセルのうち、前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのためにその設定が維持される必要がある少なくとも1つの候補ターゲットセルを示す、
RANノード。
(付記45)
User Equipment(UE)の条件付きハンドオーバのソースノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
前記UEの第1の条件付きハンドオーバの第1の候補ターゲットノードから制御メッセージを受信することを備え、
前記制御メッセージは、前記第1の条件付きハンドオーバのために前記第1の候補ターゲットノードにより準備された1又はそれ以上の候補ターゲットセルを示し、
前記制御メッセージは、前記1又はそれ以上の候補ターゲットセルのうち、前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのためにその設定が維持される必要がある少なくとも1つの候補ターゲットセルを示す、
方法。
2 ソース・セカンダリノード(Source Secondary Node(S-SN))
3 User Equipment(UE)
4 ターゲット・セカンダリノード(Target Secondary Node(T-SN))
6 ソースノード
7 ターゲットノード
2404 プロセッサ
2405 メモリ
2406 モジュール(modules)
2503 ベースバンドプロセッサ
2504 アプリケーションプロセッサ
2506 メモリ
2507 モジュール(modules)
Claims (45)
- User Equipment(UE)のためのデュアルコネクティビティにおいてMaster Cell Group(MCG)に関連付けられたMaster Node(MN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、制御メッセージを候補Secondary Node(SN)に送信するよう構成され、
前記制御メッセージは、前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために1又はそれ以上の候補PSCellが前記候補SNによって準備される必要があることを示し、
前記制御メッセージは、前記第1の条件付きモビリティのために前記UEに供給される前記1又はそれ以上の候補PSCellの設定が前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。 - 前記少なくとも1つのプロセッサは、前記後続の条件付きPSCell変更のために前記1又はそれ以上の候補PSCellの設定が前記UEにより維持される必要があるか否かを決定するよう構成される、
請求項1に記載のRANノード。 - 前記制御メッセージは、SN Addition Requestメッセージである、
請求項1又は2に記載のRANノード。 - 前記第1の条件付きモビリティは、条件付きSecondary Node(SN)変更又はSN間PSCell変更であり、
前記少なくとも1つのプロセッサは、前記第1の条件付きモビリティのソースPSCellが前記後続の条件付きPSCell変更における候補PSCellの1つとされることを、前記制御メッセージ又は他の制御メッセージを介して、前記候補SNに示すよう構成される、
請求項1~3のいずれか1項に記載のRANノード。 - 前記第1の条件付きモビリティは、条件付きSecondary Node(SN)変更又はSN間PSCell変更であり、
前記少なくとも1つのプロセッサは、前記第1の条件付きモビリティのソースPSCellが前記後続の条件付きPSCell変更における候補PSCellの1つとされることを、前記ソースPSCellを提供するソースSNに示すよう構成される、
請求項1~4のいずれか1項に記載のRANノード。 - User Equipment(UE)のためのデュアルコネクティビティにおいてMaster Cell Group(MCG)に関連付けられたMaster Node(MN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
制御メッセージを候補Secondary Node(SN)に送信することを備え、
前記制御メッセージは、前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために1又はそれ以上の候補PSCellが前記候補SNによって準備される必要があることを示し、
前記制御メッセージは、前記第1の条件付きモビリティのために前記UEに供給される前記1又はそれ以上の候補PSCellの設定が前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
方法。 - User Equipment(UE)のためのデュアルコネクティビティにおいてMaster Cell Group(MCG)に関連付けられたMaster Node(MN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードのための方法をコンピュータに行わせるプログラムを格納した非一時的なコンピュータ可読媒体であって、
前記方法は、制御メッセージを候補Secondary Node(SN)に送信することを備え、
前記制御メッセージは、前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために1又はそれ以上の候補PSCellが前記候補SNによって準備される必要があることを示し、
前記制御メッセージは、前記第1の条件付きモビリティのために前記UEに供給される前記1又はそれ以上の候補PSCellの設定が前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
非一時的なコンピュータ可読媒体。 - User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられたソースSecondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、制御メッセージを前記デュアルコネクティビティのMaster Node(MN)に送信するよう構成され、
前記制御メッセージは、前記UEための第1の条件付きPrimary Secondary Cell Group(SCG)Cell(PSCell)変更のために前記ソースSNが推薦する1又はそれ以上の候補PSCellを示し、
前記制御メッセージは、前記第1の条件付きPSCell変更のために前記UEに供給される前記1又はそれ以上の候補PSCellの設定が前記第1の条件付きPCell変更の後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。 - 前記少なくとも1つのプロセッサは、前記後続の条件付きPSCell変更のために前記1又はそれ以上の候補PSCellの設定が前記UEにより維持される必要があるか否かを決定するよう構成される、
請求項8に記載のRANノード。 - 前記制御メッセージは、SN Change Requiredメッセージである、
請求項8又は9に記載のRANノード。 - User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられたソースSecondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
制御メッセージを前記デュアルコネクティビティのMaster Node(MN)に送信することを備え、
前記制御メッセージは、前記UEための第1の条件付きPrimary Secondary Cell Group(SCG)Cell(PSCell)変更のために前記ソースSNが推薦する1又はそれ以上の候補PSCellを示し、
前記制御メッセージは、前記第1の条件付きPSCell変更のために前記UEに供給される前記1又はそれ以上の候補PSCellの設定が前記第1の条件付きPCell変更の後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
方法。 - User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられた候補Secondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、第1の制御メッセージを前記デュアルコネクティビティのMaster Node(MN)から受信し、前記第1の制御メッセージに応答して第2の制御メッセージを前記MNに送信するよう構成され、
前記第1の制御メッセージは、前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために1又はそれ以上の候補PSCellが準備される必要があることを示し、
前記第2の制御メッセージは、前記1又はそれ以上の候補PSCellのうち前記候補SNにより準備された少なくとも1つの候補PSCellを示し、
前記第2の制御メッセージは、前記第1の条件付きモビリティのために前記UEに供給される前記少なくとも1つの候補PSCellの設定が前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。 - 前記少なくとも1つのプロセッサは、前記後続の条件付きPSCell変更のために前記少なくとも1つの候補PSCellの設定が前記UEにより維持される必要があるか否かを決定するよう構成される、
請求項12に記載のRANノード。 - 前記第1の制御メッセージは、SN Addition Requestメッセージであり、前記第2の制御メッセージはSN Addition Request Acknowledgeメッセージである、
請求項12又は13に記載のRANノード。 - User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられた候補Secondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
第1の制御メッセージを前記デュアルコネクティビティのMaster Node(MN)から受信すること、及び
前記第1の制御メッセージに応答して第2の制御メッセージを前記MNに送信すること、
を備え、
前記第1の制御メッセージは、前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために1又はそれ以上の候補PSCellが準備される必要があることを示し、
前記第2の制御メッセージは、前記1又はそれ以上の候補PSCellのうち前記候補SNにより準備された少なくとも1つの候補PSCellを示し、
前記第2の制御メッセージは、前記第1の条件付きモビリティのために前記UEに供給される前記少なくとも1つの候補PSCellの設定が前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
方法。 - User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられた候補Secondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティにおける1又はそれ以上の候補PSCellを準備し、
前記1又はそれ以上の候補PSCellのうち1つが前記UEにより選択されたなら、SN Radio Resource Control(RRC)メッセージを前記UEに送信する、
よう構成され、
前記SN RRCメッセージは、前記第1の条件付きモビリティのために準備されていた前記選択された候補PSCell以外の他の1又はそれ以上の候補PSCellの設定が、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。 - 前記少なくとも1つのプロセッサは、前記他の1又はそれ以上の候補PSCellの設定が前記後続の条件付きPSCell変更のために前記UEにより維持される必要があるか否かを決定するよう構成される、
請求項16に記載のRANノード。 - User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられた候補Secondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティにおける1又はそれ以上の候補PSCellを準備すること、及び
前記1又はそれ以上の候補PSCellのうち1つが前記UEにより選択されたなら、SN Radio Resource Control(RRC)メッセージを前記UEに送信すること、
を備え、
前記SN RRCメッセージは、前記第1の条件付きモビリティのために準備されていた前記選択された候補PSCell以外の1又はそれ以上の候補PSCellの設定が、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために前記UEにより再利用される動作モードが推奨されることを示す、
方法。 - User Equipment(UE)の条件付きハンドオーバのソースノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、制御メッセージを候補ターゲットノードに送信するよう構成され、
前記制御メッセージは、前記UEの第1の条件付きハンドオーバのために1又はそれ以上の候補ターゲットセルが前記候補ターゲットノードによって準備される必要があることを示し、
前記制御メッセージは、前記第1の条件付きハンドオーバのために前記UEに供給される前記1又はそれ以上の候補ターゲットセルの設定が前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。 - 前記少なくとも1つのプロセッサは、前記第2の条件付きハンドオーバのために前記1又はそれ以上の候補ターゲットセルの設定が前記UEにより維持される必要があるか否かを決定するよう構成される、
請求項19に記載のRANノード。 - User Equipment(UE)の条件付きハンドオーバのソースノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
制御メッセージを候補ターゲットノードに送信することを備え、
前記制御メッセージは、前記UEの第1の条件付きハンドオーバのために1又はそれ以上の候補ターゲットセルが前記候補ターゲットノードによって準備される必要があることを示し、
前記制御メッセージは、前記第1の条件付きハンドオーバのために前記UEに供給される前記1又はそれ以上の候補ターゲットセルの設定が前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのために前記UEにより再利用される動作モードが推奨されることを示す、
方法。 - User Equipment(UE)の条件付きハンドオーバの候補ターゲットノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、第1の制御メッセージをソースノードから受信し、前記第1の制御メッセージに応答して第2の制御メッセージを前記ソースノードに送信するよう構成され、
前記第1の制御メッセージは、前記UEの第1の条件付きハンドオーバのために1又はそれ以上の候補ターゲットセルが準備される必要があることを示し、
前記第2の制御メッセージは、前記1又はそれ以上の候補ターゲットセルのうち前記ソースノードにより準備された少なくとも1つの候補ターゲットセルを示し、
前記第2の制御メッセージは、前記第1の条件付きハンドオーバのために前記UEに供給される前記少なくとも1つの候補ターゲットセルの設定が前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。 - 前記少なくとも1つのプロセッサは、前記第2の条件付きハンドオーバのために前記1又はそれ以上の候補ターゲットセルの設定が前記UEにより維持される必要があるか否かを決定するよう構成される、
請求項22に記載のRANノード。 - User Equipment(UE)の条件付きハンドオーバの候補ターゲットノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
第1の制御メッセージをソースノードから受信すること、及び
前記第1の制御メッセージに応答して第2の制御メッセージを前記ソースノードに送信すること、
を備え、
前記第1の制御メッセージは、前記UEの第1の条件付きハンドオーバのために1又はそれ以上の候補ターゲットセルが準備される必要があることを示し、
前記第2の制御メッセージは、前記1又はそれ以上の候補ターゲットセルのうち前記ソースノードにより準備された少なくとも1つの候補ターゲットセルを示し、
前記第2の制御メッセージは、前記第1の条件付きハンドオーバのために前記UEに供給される前記少なくとも1つの候補ターゲットセルの設定が前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのために前記UEにより再利用される動作モードが推奨されることを示す、
方法。 - User Equipment(UE)の条件付きハンドオーバの候補ターゲットノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEの第1の条件付きハンドオーバにおける1又はそれ以上の候補ターゲットセルを準備し、
前記1又はそれ以上の候補ターゲットセルのうち1つが前記UEにより選択されたなら、Radio Resource Control(RRC)メッセージを前記UEに送信する、
よう構成され、
前記RRCメッセージは、前記第1の条件付きハンドオーバのために準備されていた前記選択された候補ターゲットセル以外の他の1又はそれ以上の候補ターゲットセルの設定が、前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのために前記UEにより再利用される動作モードが推奨されることを示す、
RANノード。 - 前記少なくとも1つのプロセッサは、前記他の1又はそれ以上の候補ターゲットセルの設定が前記第2の条件付きハンドオーバのために前記UEにより維持される必要があるか否かを決定するよう構成される、
請求項25に記載のRANノード。 - User Equipment(UE)の条件付きハンドオーバの候補ターゲットノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
前記UEの第1の条件付きハンドオーバにおける1又はそれ以上の候補ターゲットセルを準備すること、及び
前記1又はそれ以上の候補ターゲットセルのうち1つが前記UEにより選択されたなら、Radio Resource Control(RRC)メッセージを前記UEに送信すること、
を備え、
前記RRCメッセージは、前記第1の条件付きハンドオーバのために準備されていた前記選択された候補ターゲットセル以外の1又はそれ以上の候補ターゲットセルの設定が、前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのために前記UEにより再利用される動作モードが推奨されることを示す、
方法。 - User Equipment(UE)であって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのための複数の候補Secondary Node(SN)により提供される複数の候補PSCellの設定をMaster Node(MN)から受信し、
前記複数の候補PSCellのうち1つの実行条件が満たされたなら、前記1つの候補PSCellに対応する設定を適用し、
前記1つの候補PSCellを提供する選択された候補SNによって提供される他の1又はそれ以上の候補PSCellの設定のみを、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために選択的に維持する、
よう構成される、
UE。 - User Equipment(UE)により行われる方法であって、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのための複数の候補Secondary Node(SN)により提供される複数の候補PSCellの設定をMaster Node(MN)から受信すること、
前記複数の候補PSCellのうち1つの実行条件が満たされたなら、前記1つの候補PSCellに対応する設定を適用すること、及び
前記1つの候補PSCellを提供する選択された候補SNによって提供される他の1又はそれ以上の候補PSCellの設定のみを、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために選択的に維持すること、
を備える方法。 - User Equipment(UE)であって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのための複数の候補PSCellの設定をMaster Node(MN)から受信し、
前記複数の候補PSCellのうち1つの実行条件が満たされたなら、前記1つの候補PSCellに対応する設定を適用し、
前記1つの候補PSCell以外の前記複数の候補PSCellのうち、前記MN又は1若しくはそれ以上の候補Secondary Node(SN)により指定された1又はそれ以上の候補PSCellの設定を、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために選択的に維持する、
よう構成される、
UE。 - User Equipment(UE)により行われる方法であって、
少なくとも1つのメモリと、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのための複数の候補PSCellの設定をMaster Node(MN)から受信すること、
前記複数の候補PSCellのうち1つの実行条件が満たされたなら、前記1つの候補PSCellに対応する設定を適用すること、及び
前記1つの候補PSCell以外の前記複数の候補PSCellのうち、前記MN又は1若しくはそれ以上の候補Secondary Node(SN)により指定された1又はそれ以上の候補PSCellの設定を、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のために選択的に維持すること、
を備える方法。 - User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられた候補Secondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために前記候補SNにより準備された1又はそれ以上の候補PSCellをMaster Node(MN)に示し、
前記1又はそれ以上の候補PSCellのうち、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のためにその設定が維持される必要がある少なくとも1つの候補PSCellを前記MNに示す、
よう構成される、
RANノード。 - User Equipment(UE)のためのデュアルコネクティビティにおいてSecondary Cell Group(SCG)に関連付けられた候補Secondary Node(SN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティのために前記候補SNにより準備された1又はそれ以上の候補PSCellをMaster Node(MN)に示すこと、及び
前記1又はそれ以上の候補PSCellのうち、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のためにその設定が維持される必要がある少なくとも1つの候補PSCellを前記MNに示すこと、
を備える方法。 - User Equipment(UE)のためのデュアルコネクティビティにおいてMaster Cell Group(MCG)に関連付けられたMaster Node(MN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティの第1の候補Secondary Node(SN)から制御メッセージを受信するよう構成され、
前記制御メッセージは、前記第1の条件付きモビリティのために前記第1の候補SNにより準備された1又はそれ以上の候補PSCellを示し、
前記制御メッセージは、前記1又はそれ以上の候補PSCellのうち、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のためにその設定が維持される必要がある少なくとも1つの候補PSCellを示す、
RANノード。 - 前記少なくとも1つのプロセッサは、前記なくとも1つの候補PSCellを前記UEに知らせせるよう構成される、
請求項34に記載のRANノード。 - 前記少なくとも1つのプロセッサは、前記第1の候補SNとは異なる前記第1の条件付きモビリティの第2の候補SNに、前記少なくとも1つの候補PSCellを知らせるよう構成される、
請求項34又は35に記載のRANノード。 - User Equipment(UE)のためのデュアルコネクティビティにおいてMaster Cell Group(MCG)に関連付けられたMaster Node(MN)として動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
前記UEためのPrimary Secondary Cell Group(SCG)Cell(PSCell)の追加又は変更を伴う第1の条件付きモビリティの第1の候補Secondary Node(SN)から制御メッセージを受信することを備え、
前記制御メッセージは、前記第1の条件付きモビリティのために前記第1の候補SNにより準備された1又はそれ以上の候補PSCellを示し、
前記制御メッセージは、前記1又はそれ以上の候補PSCellのうち、前記第1の条件付きモビリティの後の後続の条件付きPSCell変更のためにその設定が維持される必要がある少なくとも1つの候補PSCellを示す、
方法。 - User Equipment(UE)であって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEの第1の条件付きハンドオーバのための複数の候補ターゲットノードにより提供される複数の候補ターゲットセルの設定をソースノードから受信し、
前記複数の候補ターゲットセルのうち1つの実行条件が満たされたなら、前記1つの候補ターゲットセルに対応する設定を適用し、
前記1つの候補ターゲットセルを提供する選択された候補ターゲットノードによって提供される他の1又はそれ以上の候補ターゲットセルの設定のみを、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのために選択的に維持する、
よう構成される、
UE。 - User Equipment(UE)により行われる方法であって、
前記UEの第1の条件付きハンドオーバのための複数の候補ターゲットノードにより提供される複数の候補ターゲットセルの設定をソースノードから受信すること、
前記複数の候補ターゲットセルのうち1つの実行条件が満たされたなら、前記1つの候補ターゲットセルに対応する設定を適用すること、及び
前記1つの候補ターゲットセルを提供する選択された候補ターゲットノードによって提供される他の1又はそれ以上の候補ターゲットセルの設定のみを、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのために選択的に維持すること、
を備える方法。 - User Equipment(UE)であって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEの第1の条件付きハンドオーバのための複数の候補ターゲットセルの設定をソースノードから受信し、
前記複数の候補ターゲットセルのうち1つの実行条件が満たされたなら、前記1つの候補ターゲットセルに対応する設定を適用し、
前記1つの候補ターゲットセルを除く前記複数の候補ターゲットセルのうち、前記ソースノード又は1又はそれ以上の候補ターゲットノードにより指定された1又はそれ以上の候補ターゲットセルの設定を、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのために選択的に維持する、
よう構成される、
UE。 - User Equipment(UE)により行われる方法であって、
前記UEの第1の条件付きハンドオーバのための複数の候補ターゲットセルの設定をソースノードから受信すること、
前記複数の候補ターゲットセルのうち1つの実行条件が満たされたなら、前記1つの候補ターゲットセルに対応する設定を適用すること、及び
前記1つの候補ターゲットセルを除く前記複数の候補ターゲットセルのうち、前記ソースノード又は1又はそれ以上の候補ターゲットノードにより指定された1又はそれ以上の候補ターゲットセルの設定を、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのために選択的に維持すること、
を備える方法。 - User Equipment(UE)の条件付きハンドオーバの候補ターゲットノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、
前記UEの第1の条件付きハンドオーバのために前記候補ターゲットノードにより準備された1又はそれ以上の候補ターゲットセルをソースノードに示し、
前記1又はそれ以上の候補ターゲットセルのうち、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのためにその設定が維持される必要がある少なくとも1つの候補ターゲットセルを前記ソースノードに示す、
よう構成される、
RANノード。 - User Equipment(UE)の条件付きハンドオーバの候補ターゲットノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
前記UEの第1の条件付きハンドオーバのために前記候補ターゲットノードにより準備された1又はそれ以上の候補ターゲットセルをソースノードに示すこと、及び
前記1又はそれ以上の候補ターゲットセルのうち、前記第1の条件付きハンドオーバの後続の第2の条件付きハンドオーバのためにその設定が維持される必要がある少なくとも1つの候補ターゲットセルを前記ソースノードに示すこと、
を備える方法。 - User Equipment(UE)の条件付きハンドオーバのソースノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードであって、
少なくとも1つのメモリと、
前記少なくとも1つのメモリに結合された少なくとも1つのプロセッサと、
を備え、
前記少なくとも1つのプロセッサは、前記UEの第1の条件付きハンドオーバの第1の候補ターゲットノードから制御メッセージを受信するよう構成され、
前記制御メッセージは、前記第1の条件付きハンドオーバのために前記第1の候補ターゲットノードにより準備された1又はそれ以上の候補ターゲットセルを示し、
前記制御メッセージは、前記1又はそれ以上の候補ターゲットセルのうち、前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのためにその設定が維持される必要がある少なくとも1つの候補ターゲットセルを示す、
RANノード。 - User Equipment(UE)の条件付きハンドオーバのソースノードとして動作するよう構成された無線アクセスネットワーク(RAN)ノードにより行われる方法であって、
前記UEの第1の条件付きハンドオーバの第1の候補ターゲットノードから制御メッセージを受信することを備え、
前記制御メッセージは、前記第1の条件付きハンドオーバのために前記第1の候補ターゲットノードにより準備された1又はそれ以上の候補ターゲットセルを示し、
前記制御メッセージは、前記1又はそれ以上の候補ターゲットセルのうち、前記第1の条件付きハンドオーバの後の後続の第2の条件付きハンドオーバのためにその設定が維持される必要がある少なくとも1つの候補ターゲットセルを示す、
方法。
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| US18/717,000 US20250039761A1 (en) | 2021-12-28 | 2022-10-27 | Radio access network node, user equipment, and methods therefor |
| EP22915504.9A EP4460098A4 (en) | 2021-12-28 | 2022-10-27 | WIRELESS ACCESS NETWORK NODE, USER DEVICE AND METHODS THEREFOR |
| JP2023570684A JP7683744B2 (ja) | 2021-12-28 | 2022-10-27 | 無線アクセスネットワークノードにより行われる方法およびUser Equipmentにより行われる方法 |
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| EP (1) | EP4460098A4 (ja) |
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| WO (1) | WO2023127271A1 (ja) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2025021061A1 (zh) * | 2023-07-27 | 2025-01-30 | 维沃移动通信有限公司 | Cpc配置方法、装置及通信设备 |
| WO2025028096A1 (ja) * | 2023-08-01 | 2025-02-06 | 日本電気株式会社 | 無線アクセスネットワークノード及びその方法 |
| WO2025049752A1 (en) * | 2023-09-01 | 2025-03-06 | Ofinno, Llc | Secondary Node Addition/Change in Radio Access Network |
| WO2025145398A1 (zh) * | 2024-01-04 | 2025-07-10 | 北京小米移动软件有限公司 | 通信方法、终端设备、网络设备、通信系统及存储介质 |
| WO2025156227A1 (zh) * | 2024-01-25 | 2025-07-31 | 北京小米移动软件有限公司 | 信息传输方法及装置、存储介质 |
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| CN116939648A (zh) * | 2022-04-01 | 2023-10-24 | 维沃移动通信有限公司 | 候选小区处理方法及装置、终端及网络侧设备 |
| US20240381194A1 (en) * | 2023-05-11 | 2024-11-14 | Industrial Technology Research Institute | Execution condition generation method for candidate node, serving node and ue |
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| CN112399488B (zh) * | 2019-08-14 | 2024-12-10 | 苹果公司 | 连续有条件切换 |
-
2022
- 2022-10-27 EP EP22915504.9A patent/EP4460098A4/en not_active Withdrawn
- 2022-10-27 JP JP2023570684A patent/JP7683744B2/ja active Active
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- 2022-10-27 US US18/717,000 patent/US20250039761A1/en active Pending
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025021061A1 (zh) * | 2023-07-27 | 2025-01-30 | 维沃移动通信有限公司 | Cpc配置方法、装置及通信设备 |
| WO2025028096A1 (ja) * | 2023-08-01 | 2025-02-06 | 日本電気株式会社 | 無線アクセスネットワークノード及びその方法 |
| WO2025049752A1 (en) * | 2023-09-01 | 2025-03-06 | Ofinno, Llc | Secondary Node Addition/Change in Radio Access Network |
| WO2025145398A1 (zh) * | 2024-01-04 | 2025-07-10 | 北京小米移动软件有限公司 | 通信方法、终端设备、网络设备、通信系统及存储介质 |
| WO2025156227A1 (zh) * | 2024-01-25 | 2025-07-31 | 北京小米移动软件有限公司 | 信息传输方法及装置、存储介质 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7683744B2 (ja) | 2025-05-27 |
| EP4460098A1 (en) | 2024-11-06 |
| US20250039761A1 (en) | 2025-01-30 |
| EP4460098A4 (en) | 2025-04-09 |
| JPWO2023127271A1 (ja) | 2023-07-06 |
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