Mobile terminal and power-saving method and device for same

A mobile terminal, comprising configured to execute software stored on a non-transitory storage medium, which causes the mobile terminal to:

• monitor data services in accordance with a monitoring strategy for a data service power-saving state, wherein the monitoring involves
• determining whether or not there exists an on-going data service,
• starting a timer when it is determined that the data service exists,
• monitoring whether or not there exists data transmission for the data service while the timer is running,
• if there exists data transmission for the data service, re-starting the timer and monitoring whether or not there exists the on-going data service, and if there exists no data transmission for the data service, monitoring whether or not there exists non-access stratum NAS signaling transmission,
• if there exists no NAS signaling transmission, judging whether or not the timer is timed out, if not, continuing to monitor the data for the data service, and if yes, regarding that a triggering condition set in the monitoring strategy is met;
• and
• If there exists NAS signaling, judging whether a duration away from the timeout of the timer is greater than a maximum timer duration TNAS for an NAS layer, if the duration away from the timeout of the timer is greater than TNAS, continuing to monitor the data for the data service, and if the duration away from the timeout of the timer is less than TNAS, adjusting a duration of the timer so that it is timed out at least after TNAS;
• trigger a data service power-saving operation when a triggering condition set in the monitoring strategy is met;
• and
• perform the data service power-saving operation.

A power-saving method for a mobile terminal, comprising the steps of:

• monitoring, by the mobile terminal, data services in accordance with a monitoring strategy for a data service power-saving state, wherein the monitoring involves determining whether or not there exists an on-going data service, starting a timer when it is determined that the data service exists, monitoring whether or not there exists a data transmission for the data service while the timer is running, and monitoring whether or not there exists a non-access stratum NAS signaling transmission while the timer is running;
• triggering a data service power-saving operation when a triggering condition set in the monitoring strategy is met, wherein the triggering condition is that the timer has timed out and that data transmission for the data service and NAS signaling transmissions did not occur between a time when the timer started and when the timer timed out;
• and
• performing, by the mobile terminal, the data service power-saving operation.