Relaxation of mobility condition based on serving cell quality

A wireless device operating in a wireless communication system, the wireless device comprising:

• at least one transceiver;
• at least processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, performs operations comprising:
• receiving, from a network, a conditional mobility configuration including one or more conditional mobility conditions for one or more target cells, wherein the one or more conditional mobility conditions are configured based on one of 1) a comparison between a measurement relating to each of the one or more target cells and a measurement relating to a serving cell, or 2) comparison between a measurement relating to the serving cell with respect to a first threshold and a measurement relating to each of the one or more target cells with respect to a second threshold;
• before triggering mobility to one of the one or more target cells based on a satisfaction of the one or more conditional mobility conditions, detecting a radio link problem on a serving cell based on expiration of a timer which starts running upon receiving N-consecutive out-of-sync indications for the serving cell from lower layers;
• performing a cell selection, wherein a target cell for which a cell selection criterion S is satisfied is selected among the one or more target cells by the cell selection, wherein the cell selection criterion S is that a measurement result of the target cell is above a default threshold, and wherein the cell selection criterion S is different from the one or more conditional mobility conditions;
• and
• performing mobility to the selected target cell,
• wherein the cell selection criterion S is satisfied based on:
• Srxlev>0 AND Squal>0
• where:
• Srxlev=Qrxlevmeas−(Qrxlevmin+Qrxlevminoffset)−Pcompensation−Qoffsettemp
• Squal=Qqualmeas−(Qqualmin+Qqualminoffset)−Qoffsettemp
• where:
• Srxlev denotes a cell selection reception (RX) level value, Qrxlevmeas denotes a measured cell RX level value, Qrxlevmin denotes a minimum required RX level value in a cell, Qrxlevminoffset denotes an offset to the Qrxlevmin, Pcompensation denotes a parameter related to additionalPmax, Qoffsettemp denotes an offset temporarily applied to the cell, Squal denotes a cell selection quality value, Qqualmeas denotes a measured cell quality value, Qqualmin denotes a minimum required quality level value in the cell, and Qqualminoffset denotes an offset to the Qqualmin.

A processing apparatus of a wireless device configured to operate in a wireless communication system, the processing apparatus comprising:

• at least processor;
• and
• at least one memory operably connectable to the at least one processor, wherein the at least one processor is configured to perform operations comprising:
• obtaining a conditional mobility configuration including one or more conditional mobility conditions for one or more target cells, wherein the one or more conditional mobility conditions are configured based on one of 1) a comparison between a measurement relating to each of the one or more target cells and a measurement relating to a serving cell, or 2) comparison between a measurement relating to the serving cell with respect to a first threshold and a measurement relating to each of the one or more target cells with respect to a second threshold;
• before triggering mobility to one of the one or more target cells based on a satisfaction of the one or more conditional mobility conditions, detecting a radio link problem on a serving cell based on expiration of a timer which starts running upon receiving N-consecutive out-of-sync indications for the serving cell from lower layers;
• performing a cell selection, wherein a target cell for which a cell selection criterion S is satisfied is selected among the one or more target cells by the cell selection, wherein the cell selection criterion S is that a measurement result of the target cell is above a default threshold, and wherein the cell selection criterion S is different from the one or more conditional mobility conditions;
• and
• performing mobility to the selected target cell,
• wherein the cell selection criterion S is satisfied based on:
• Srxlev>0 AND Squal>0
• where:
• Srxlev=Qrxlevmeas−(Qrxlevmin+Qrxlevminoffset)−Pcompensation−Qoffsettemp
• Squal=Qqualmeas−(Qqualmin+Qqualminoffset)−Qoffsettemp
• where:
• Srxlev denotes a cell selection reception (RX) level value, Qrxlevmeas denotes a measured cell RX level value, Qrxlevmin denotes a minimum required RX level value in a cell, Qrxlevminoffset denotes an offset to the Qrxlevmin, Pcompensation denotes a parameter related to additionalPmax, Qoffsettemp denotes an offset temporarily applied to the cell, Squal denotes a cell selection quality value, Qqualmeas denotes a measured cell quality value, Qqualmin denotes a minimum required quality level value in the cell, and Qqualminoffset denotes an offset to the Qqualmin.