Mobility in dense networks

A method, performed by a user equipment (UE), said UE being located in and connected to a primary cell (PCell) in a wireless communication system, said wireless communication system providing carrier aggregation (CA), the method comprising:

• receiving, from a network node, initial configuration data that comprises information regarding at least one secondary cell (SCell), one of which is a current SCell to which the UE is to be connected, and at least one event triggering condition that defines radio signal measurement conditions for use by the UE when switching connection between a current SCell and a subsequent SCell,
• connecting to the current SCell, and repeating the steps of:
• receiving, from the network node, information that specifies at least one predicted subsequent SCell,
• measuring radio signals associated with the current SCell and radio signals associated with said at least one SCell,
• determining, based on the measuring of radio signals, an event according to the at least one event triggering condition and, if said event indicates that a specific SCell among the at least one predicted subsequent SCell is better than the current SCell:
• deactivating the current SCell and activating the specific SCell that is better than the current SCell whereby the specific SCell becomes the current SCell, and
• providing, to the network node, a report that comprises information regarding the determined event and information regarding the activation of the specific SCell that is better than the current SCell.

A network node comprising input/output circuitry, a processor and a memory, said memory containing instructions executable by said processor whereby said node is operative to:

• transmit, to a user equipment (UE), initial configuration data that comprises information regarding at least one secondary cell (SCell), one of which is a current SCell to which the UE is to be connected, and at least one event triggering condition that defines radio signal measurement conditions for use by the UE when switching connection between a current SCell and a subsequent SCell, and repeating the steps of:
• obtain monitoring data associated with the UE, said monitoring data comprising spatial information regarding movement of the UE in relation to the at least one SCell,
• calculate, based on the monitoring data, at least one prediction of at least one subsequent predicted SCell into which the UE will enter,
• transmit, to the UE, information that specifies said at least one predicted subsequent SCell,
• provide, to the at least one subsequent predicted SCell, preparation information that comprises information for the at least one subsequent predicted SCell that it is to operate as a SCell in relation to the UE.

A user equipment comprising radio frequency circuitry, a processor and a memory, said memory containing instructions executable by said processor whereby said node is operative to:

• receive, from a network node, initial configuration data that comprises information regarding at least one secondary cell (SCell), one of which is a current SCell to which the UE is to be connected, and at least one event triggering condition that defines radio signal measurement conditions for use by the UE when switching connection between a current SCell and a subsequent SCell,
• connect to the current SCell, and repeating the steps of:
• receive, from the network node, information that specifies at least one predicted subsequent SCell,
• measure radio signals associated with the current SCell and radio signals associated with said at least one SCell,
• determine, based on the measuring of radio signals, an event according to the at least one event triggering condition and, if said event indicates that a specific SCell among the at least one predicted subsequent SCell is better than the current SCell:
• deactivate the current SCell and activating the specific SCell that is better than the current SCell whereby the specific SCell becomes the current SCell, and
• provide, to the network node, a report that comprises information regarding the determined event and information regarding the activation of the specific SCell that is better than the current SCell.

A nontransitory computer readable storage medium comprising a computer program comprising instructions which, when executed on at least one processor in a network node in a wireless communication system, said wireless communication system providing carrier aggregation (CA) for a user equipment (UE), said UE being located in and connected to a primary cell, cause the network node to carry out a method comprising:

• transmitting, to the UE, initial configuration data that comprises information regarding at least one secondary cell (SCell), one of which is a current SCell to which the UE is to be connected, and at least one event triggering condition that defines radio signal measurement conditions for use by the UE when switching connection between a current SCell and a subsequent SCell, and repeating the steps of:
• obtaining monitoring data associated with the UE, said monitoring data comprising spatial information regarding movement of the UE in relation to the at least one SCell,
• calculating, based on the monitoring data, at least one prediction of at least one subsequent predicted SCell into which the UE will enter,
• transmitting, to the UE, information that specifies said at least one predicted subsequent SCell,
• providing, to the at least one subsequent predicted SCell, preparation information that comprises information for the at least one subsequent predicted SCell that it is to operate as a SCell in relation to the UE.

A nontransitory computer readable storage medium comprising a computer program comprising instructions which, when executed on at least one processor in a user equipment (UE), said UE being located in and connected to a primary cell (PCell) in a wireless communication system, said wireless communication system providing carrier aggregation (CA), cause the UE to carry out a method comprising:

• receiving, from a network node, initial configuration data that comprises information regarding at least one secondary cell (SCell), one of which is a current SCell to which the UE is to be connected, and at least one event triggering condition that defines radio signal measurement conditions for use by the UE when switching connection between a current SCell and a subsequent SCell,
• connecting to the current SCell, and repeating the steps of:
• receiving, from the network node, information that specifies at least one predicted subsequent SCell,
• measuring radio signals associated with the current SCell and radio signals associated with said at least one SCell,
• determining, based on the measuring of radio signals, an event according to the at least one event triggering condition and, if said event indicates that a specific SCell among the at least one predicted subsequent SCell is better than the current SCell:
• deactivating the current SCell and activating the specific SCell that is better than the current SCell whereby the specific SCell becomes the current SCell, and
• providing, to the network node, a report that comprises information regarding the determined event and information regarding the activation of the specific SCell that is better than the current SCell.