Method and apparatus for determining signal status of terminal device

A method for selecting a network access mode and implemented by a mobile device, the method comprising:

• acquiring first data transmission quality parameters in a target network access mode during first periods, wherein the first data transmission quality parameters indicate a first quality of first data transmitted in the target network access mode;
• assigning a signal status level for the target network access mode is as a first signal status level based on the first data transmission quality parameters falling within a first range;
• acquiring second data transmission quality parameters in the target network access mode during second periods;
• obtaining a hysteresis range using an endpoint of the first range as a starting point of the hysteresis range, wherein the hysteresis range is outside of the first range;
• keeping the signal status level as the first signal status level when the second data transmission quality parameters fall within the hysteresis range, wherein the second periods are after the first periods;
• and
• selecting, based on the signal status level of the target network access mode and a second signal status level of a second signal status of a second network access mode, the target network access mode to perform a service.

A mobile device comprising:

• a memory;
• and
• a processor coupled to the memory and configured to:
• acquire first data transmission quality parameters in a target network access mode during first periods, wherein the first data transmission quality parameters indicate a first quality of first data transmitted in the target network access mode;
• assign a signal status level for the target network access mode is as a first signal status level based on the first data transmission quality parameters fail falling within a first range;
• acquire second data transmission quality parameters in the target network access mode during second periods;
• obtain a hysteresis range using an endpoint of the first range as a starting point of the hysteresis range, wherein the hysteresis range is outside of the first range;
• keep the signal status level as the first signal status level when the second data transmission quality parameters fall within the hysteresis range, wherein the second periods are after the first periods;
• and
• select, based on the signal status level of the target network access mode and a second signal status level of a second signal status of a second network access mode, the target network access mode to perform a service.