Transitions associated with a deactivated secondary cell group

A wireless transmit/receive unit (WTRU), comprising:

• a processor configured to:
• receive configuration information, wherein the configuration information is associated with a transition to a first activity level from a second activity level, and wherein the configuration information indicates conditions associated with determining a secondary cell group (SCG) activation level associated with resumption of the first activity level, wherein the SCG activation level is an activated SCG or a deactivated SCG;
• transition from the first activity level to the second activity level;
• transition from the second activity level to the first activity level;
• determine the SCG activation level based on an evaluation of the conditions in the configuration information, wherein the conditions in the configuration information comprise a WTRU condition and a network condition, wherein the network condition comprises at least whether a bearer type associated with UL data is a first bearer type or a second bearer type;
• and
• indicate, to a base station, the determined SCG activation level.

A method implemented in a wireless transmit/receive unit (WTRU), the method comprising:

• receiving configuration information, wherein the configuration information is associated with a transition to a first activity level from a second activity level, and wherein the configuration information indicates conditions associated with determining a secondary cell group (SCG) activation level associated with resumption to the first activity level, wherein the SCG activation level is an activated SCG or a deactivated SCG;
• transitioning from the first activity level to the second activity level;
• transitioning from the second activity level to the first activity level;
• determining the SCG activation level based on an evaluation of the conditions in the configuration information, wherein the conditions in the configuration information comprise a WTRU condition and a network condition, wherein the network condition comprises at least whether a bearer type associated with UL data is a first bearer type or a second bearer type;
• and
• indicating, to a base station, the determined SCG activation level.