Methods and apparatuses for paging

A method performed by a terminal device, comprising:

• receiving, from a base station, a target wake up signal (WUS) to paging occasion (PO) mapping parameter;
• and
• detecting one or more WUSs in a paging time window (PTW), based on the target WUS to PO mapping parameter;
• wherein the target WUS to PO mapping parameter is obtained by a paging related entity by:
• obtaining first information about a probability at which each of at least one terminal device is paged at a PO, wherein the at least one terminal device comprises the terminal device;
• obtaining second information about a first power consumption and a second power consumption spent by each of the at least one terminal device for detecting a WUS and a paging message respectively;
• determining, for multiple applicable WUS to PO mapping parameters, corresponding power consumptions spent by the at least one terminal device in a PTW, based on the first and second information;
• and
• determining, as the target WUS to PO mapping parameter to be applied to the at least one terminal device, one of the multiple applicable WUS to PO mapping parameters corresponding to a lowest power consumption in a PTW.

A paging related entity comprising:

• at least one processor;
• and
• at least one memory, the at least one memory containing instructions executable by the at least one processor, whereby the paging related entity is operative to:
• obtain first information about a probability at which each of at least one terminal device is paged at a paging occasion (PO);
• obtain second information about a first power consumption and a second power consumption spent by each of the at least one terminal device for detecting a wake up signal (WUS) and a paging message respectively;
• determine, for multiple applicable WUS to PO mapping parameters, corresponding power consumptions spent by the at least one terminal device in a paging time window (PTW), based on the first and second information;
• and
• determine, as a target WUS to PO mapping parameter to be applied to the at least one terminal device, one of the multiple applicable WUS to PO mapping parameters corresponding to a lowest power consumption in a PTW.

A terminal device comprising:

• at least one processor;
• and
• at least one memory, the at least one memory containing instructions executable by the at least one processor, whereby the terminal device is operative to:
• receive, from a base station, a target wake up signal (WUS) to paging occasion (PO) mapping parameter;
• and
• detect one or more WUSs in a paging time window (PTW), based on the target WUS to PO mapping parameter;
• wherein the target WUS to PO mapping parameter is obtained by a paging related entity by:
• obtaining first information about a probability at which each of at least one terminal device is paged at a PO, wherein the at least one terminal device comprises the terminal device;
• obtaining second information about a first power consumption and a second power consumption spent by each of the at least one terminal device for detecting a WUS and a paging message respectively;
• determining, for multiple applicable WUS to PO mapping parameters, corresponding power consumptions spent by the at least one terminal device in a PTW, based on the first and second information;
• and
• determining, as the target WUS to PO mapping parameter to be applied to the at least one terminal device, one of the multiple applicable WUS to PO mapping parameters corresponding to a lowest power consumption in a PTW.